Scientific Data Documentation
National Survey Of Familty Growth, Cycle 4 (1988)
DSN: CC37.NSFG88
ABSTRACT
Introduction
The National Survey of Family Growth (NSFG), Cycle IV, was
conducted in January through August of 1988 by Westat, Inc.,
under contract to the National Center for Health Statistics
(NCHS). In-person interviews were conducted with 8450 women 15-
44 years of age, of all marital statuses.
The data from the NSFG are used by the National Center for Health
Statistics as the basis for a series of reports on fertility,
family formation, contraception, and related issues (see page 7).
In addition, agencies that support the NSFG use the data for
their own research programs.
To make the data more widely available, a standardized micro-data
tape has been prepared for distribution. This tape documentation
manual contains a detailed description of the data tape.
The tape consists of the original data for the respondent and
interval files, and a set of "recodes." The respondent file
includes a wide range of background characteristics, cohabitation
and marital histories, and measures of fertility, use of
contraception, fecundity, birth expectations, and use of family
planning services. The interval file contains detailed pregnancy
histories. Recodes are new variables that combine the code
categories of one or more original variables in ways that should
simplify analysis.
Suggestions for Users
The following is a summary of the basic information required to
use the NSFG Cycle IV Public Use Tape. See specified sections
for more details.
Organization of data (see page 8). The data have been divided
into two files. The Respondent file contains one record for each
woman in the survey and the Interval file contains one record for
each closed pregnancy interval (completed pregnancy). That is,
in the Respondent file the unit of analysis is the woman, and in
the Interval file the unit of analysis is the pregnancy interval.
The Respondent file contains the following questionnaire items:
all of Section A; questions B1-B10 and B47-B58 in Section B;
questions C1-C11, C26-C49, and the method calendar in Section C;
all of Section D; all of Section E; all of Section F; the self-
administered questionnaire.
The Interval file contains the following questionnaire items:
questions B11-B46 in Section B; questions C12-C25 in Section C.
Combining Respondent and Interval files. To combine data from
the Respondent and Interval files, use a computer program that
can process files with records of two or more types. The record
type is located in Tape Location 6-7 in both the Respondent and
Interval files. A code of 0 indicates a respondent record and
codes of 1-13 indicate an interval record.
Weights (see page 23). Analysts should use the weights
provided. The final weight is located in Tape Location 2568-2574
in the Respondent file, and in Tape Location 366-372 in the
Interval file.
Recodes (see pages 50 and 62, and Appendix 1). Many items have
been recoded to make them more useful for the analyst. Before
using the original data item, the analyst may wish to check
whether a recode exists. Missing data have been imputed for
recodes.
Dates (see page 14). All dates reported in the survey have been
converted to century months.
Standard errors (see page 22 and Appendix 6). Standard errors
which take into account the complex sample design of the NSFG
have been estimated for Cycle IV using the balanced repeated
replication technique. A short-cut method for estimating the
standard errors of statistics is provided (see Appendix 6). If
the analyst prefers to make his or her own estimates, however,
100 replicate weights appear on the public use tape in Tape
Location 2754-3553 of both the Respondent and Interval files.
User Services
Questions and comments concerning the National Survey of Family
Growth may be addressed to:
Family Growth Survey Branch
Division of Vital Statistics
National Center for Health Statistics
3700 East-West Highway
Hyattsville, MD 20782
or call Kathryn London or Lindy Williams at: (301) 436-8731.
The staff of the NSFG will assist users as much as possible
within the constraints of time and staff availability.
Publications from the National Survey of Family Growth, Cycle IV
The National Center for Health Statistics has planned reports
from the NSFG, Cycle IV, on the following topics: contraceptive
use; use of services for family planning and infertility; number,
timing, and wantedness of births; fecundity impairments including
infertility; cohabitation, marriage, and divorce; sexual activity
and the risk of sexually transmitted diseases; and sample design,
weighting, imputation, and variance estimation.
Individuals and educational institutions may obtain single copies
of publications free of charge by writing:
Scientific and Technical Information Branch
National Center for Health Statistics
3700 East-West Highway
Hyattsville, MD 20782
A current listing of NSFG publications and copies of the Cycle IV
questionnaire may be obtained by writing:
Family Growth Survey Branch
Division of Vital Statistics
National Center for Health Statistics
3700 East-West Highway
Hyattsville, MD 20782
Tape Characteristics
Label: Standard label
Tracks: 9
Density: 6250 BPI
Record Length: 3,553
Block Size: 31,977
Number of Records: 8,450 Respondent records
15,760 Interval records
24,210 Total records
METHODOLOGY
Organization of the Data
The data have been divided into two files. The Respondent file
contains one record for each woman in the survey and includes
most of the information from the interview. The Interval file
contains one record for each closed pregnancy interval, and
contains information about the characteristics of each pregnancy
and any contraceptive methods used during that interval. That
is, in the Respondent file, the woman is the unit of analysis and
in the Interval file, the pregnancy interval is the unit of
analysis.
The Respondent file contains the following questionnaire items:
all of Section A; questions B1-B10 and B47-B58 in Section B;
questions C1-C11, C26-C49, and the method calendar in Section C;
all of Section D; all of Section E; all of Section F.
The Interval file contains the following questionnaire items:
questions B11-B46 in Section B; questions C12-C25 in Section C.
Data Preparation
Using specifications prepared by the NSFG staff, the data were
edited manually in the field and in the home office of Westat,
Inc., the fieldwork contractor. Westat also conducted computer
edits for acceptable codes and internal consistency of the data.
Missing and inconsistent data items were resolved through data
retrieval in the early stages of editing, and by examination of
related items in the questionnaire in the later stages. As far
as possible, inconsistencies in the data were resolved on a case-
by-case basis, based on related data. If inconsistencies could
not be resolved, the case was assigned as missing for original
data items (see page 11). Missing values were imputed and
flagged for any recodes based on those original data items (see
page 12).
Because of the complex skip patterns in the questionnaire,
sometimes one group of women would be asked a question in one
part of the questionnaire and another group of women would be
asked the identical question in a different part of the
questionnaire. When preparing the data tape, the answers to
these questions were combined into a single data item. The
question number given in the tape documentation reflects both of
the original question numbers (for instance, D25_32). All
combined questions have been noted in the tape documentation.
During the course of coding the data, new code categories were
sometimes added if a substantial number of respondents gave an
answer that did not appear in the original questionnaire. All
added categories have been noted in the tape documentation. An
added category should be analyzed with caution because it is
quite possible that other respondents would have chosen that
answer had it been offered to them. For example, question A26
asks women who were not living with both parents at age 14
whether that was "because one or both of them had `died, they were
divorced, or for some other reason" (TL 142). Some interviewers
wrote a marginal note in the questionnaire that the respondent's
parents were separated. A new category, "they were separated,"
has been added, but it is likely that some respondents whose
parents were separated simply answered "some other reason."
Inapplicable Questions
Not all questions were applicable to all respondents. If a
question was not applicable, the interviewer skipped to the next
applicable question. With certain exceptions noted in the tape
documentation, inapplicable questions are coded as blanks. Some
computer programs read a blank as a nonnumeric character, but
others read it as a zero. Analysts should take care to
distinguish between blanks and zeroes in programs used with these
data.
The meaning of statistics based on responses to a question will
depend, of course, on who was asked the question and who was not.
Because of the rather complex skip patterns used in the
interview, it is often not apparent who was asked a particular
question. In the documentation, however, the description of the
inapplicable (blank) code category for a question includes a
precise listing of women who were not asked the question. In
addition to consulting that list, it is recommended that the
sequence of questionnaire items containing an item of interest be
examined carefully to determine the implications of skip patterns
for interpreting responses.
The documentation for the recodes also provides brief
descriptions of inapplicable categories. However, we recommend
that the analyst examine the more complete definitions of' the
inapplicable categories contained in the specifications for the
variable or variables on which the recode is based.
Missing Data
Data are sometimes missing for an item because the respondent
would not or could not answer the question, or because the
interviewer did not ask the question. For basic data items, a
refusal was coded "7" or "97," a "don't know" was coded "8" or
"98", and a "not ascertained" (missing data because of
interviewer error or for other reasons) was coded "9" or "99."
Imputation
For the majority of the recodes, values were imputed for cases
with missing values. All imputed variables were flagged.
Recodes are listed in the Respondent and Interval file Indexes
(see pages 50 and 62), along with the tape locations of the
imputation flags. The purpose of the imputation was to allow
NCHS to produce internally consistent national estimates in its
pre-planned Advance Data and Series 23 reports. We recommend
that tape users use the imputed variables for most analyses.
Results using these variables should be identical to results in
NCHS reports using final (not preliminary) data.
The following summary briefly describes the imputation procedure
used in the NSFG, Cycle IV. The summary was taken from a
forthcoming report from the National Center for Health
Statistics, National Survey of Family Growth. Cycle IV: Sample
design. weighting, imputation. and variance estimation. More
complete information on the imputation procedure used in Cycle IV
can be found in that report. The report will not be published
before fall 1990. See page 7 for information on how to obtain a
copy.
The variables requiring imputation were grouped into 32 modules.
Each module was imputed with a procedure known as hot-deck
imputation. Within a module, the hot-deck procedure sorted the
file so that similar women were close to each other. Each
woman's answers to the questions in the module were then examined
in turn. Whenever a woman had missing values for one or more of
the variables, she was given the values for the previous woman
with complete values (i. e., the previous woman's answers were
copied to her record). Only the missing variables were changed;
any complete (valid) values she had reported were left alone.
The modules were imputed serially in separate computer runs so
that each module was not imputed until the prior module was
forced to be complete. The file was sorted~ by different
variables for each module.
In general, the frequency of missing values in Cycle IV was quite
low. Missing values were imputed for 192 variables in Cycle IV.
Of these, 133 had less than 1 percent missing data (fewer ban 85
cases), 22 had I to 2 percent missing (85 to 169 cases), 16 had 2
to 5 percent missing, and 5 had 10 to Il percent missing. No
imputed variable had more than II percent of cases imputed.
The 16 variables with 5 to 10 percent missing data were all
measures of use of family planning services, including age at
first family planning visit, month of first visit, 5 measures of
specific services received at the most recent visit, and 5
measures of ways that the most recent visit was paid for.
The five variables with 10 to II percent missing data were:
education of the respondent's mother (EDUCMOM); month and year of
first cohabitation or marriage (UNION1); type and outcome of
first union (UNTYPE); duration of first union (UNIONINT); and the
ratio of family income to the poverty level (POVERTY).
All imputed data have been flagged on the public use tape so that
researchers may do their own imputations if they wish.
Date Codes
During the interview, dates of events were asked either as the
year alone, as month and year, or as day, month, and year. For
this tape, month and year were converted to "century months" by
multiplying the year by 12 and adding the number of the month,
where January = I, February = 2, and so on. For instance, the
century month code for February 1959 is (59 x 12) + 2 = 710. The
century month form is convenient for computing an interval
between dates. (Note: all century months codes occupy a five
column field.)
The century month codes from 301 through 1064 are shown in the
array below with the years from 1925 through 1988 on the vertical
axis and the months on the horizontal axis. The code for a given
month and year can be found by reading across the line for the
appropriate year to the column headed by the appropriate month.
Dates that were refused or not ascertained are coded 99999. In a
limited number of instances, 99595 or 99696 are used to indicate
a response other than a date. For example, in question C-26,
concerning the dates of periods when the respondent was not
having intercourse, respondents who did not have intercourse
after the first time are coded 99595, and respondents who
reported no periods during which they were not having intercourse
are coded 99696. All such cases are clearly indicated in the
documentation
For cases in which the year was given but the month was not, the
first digit of the code is a 9 to indicate that the date is an
estimate. The remaining four digits are equal to the century
month corresponding to the month of June in the year given.
Sometimes respondents were able to recall the season when an
event occurred, but not the precise month. If a year and a
season were given, the month was imputed as follows: spring was
coded as April, summer was coded as July, fall was coded as
October, and winter was usually coded as January.1 For cases
in which dates were imputed from a season, the dates are not
flagged.
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1 Winter was coded as December if coding it as January would
have produced a date that was inconsistent with other data. For
instance, if a respondent gave the date of an event as "Winter
1980," and other relevant information suggested that the event
took place late in 1980 rather than early in 1980, the date was
coded as December.
DATE CODES
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC
1925 301 302 303 304 305 306 307 308 309 310 311 312
1926 313 314 315 316 317 318 319 320 321 322 323 324
1927 325 326 327 328 329 330 331 332 333 334 335 336
1928 337 338 339 340 341 342 343 344 345 346 347 348
1929 349 350 351 352 353 354 355 356 357 358 359 360
1930 361 362 363 364 365 366 367 368 369 370 371 372
1931 373 374 375 376 377 378 379 380 381 382 383 384
1932 385 386 387 388 389 390 391 392 393 394 395 396
1933 397 398 399 400 401 402 403 404 405 406 407 408
1934 409 410 411 412 413 414 415 416 417 418 419 420
1935 421 422 423 424 425 426 427 428 429 430 431 432
1936 433 434 435 436 437 438 439 440 441 442 443 444
1937 445 446 447 448 449 450 451 452 453 454 455 456
1938 457 458 459 460 461 462 463 464 465 466 467 468
1939 469 470 471 472 473 474 475 476 477 478 479 480
1940 481 482 483 484 485 486 487 488 489 490 491 492
1941 493 494 495 496 497 498 499 500 501 502 503 504
1942 505 506 507 508 509 510 511 512 513 514 515 516
1943 517 518 519 520 521 522 523 524 525 526 527 528
1944 529 530 531 532 533 534 535 536 537 538 539 540
1945 541 542 543 544 545 546 547 548 549 550 551 552
1946 553 554 555 556 557 558 559 560 561 562 563 564
1947 565 566 567 568 569 570 571 572 573 574 575 576
1948 577 578 579 580 581 582 583 584 585 586 587 588
1949 589 590 591 592 593 594 595 596 597 598 599 600
1950 601 602 603 604 605 606 607 608 609 610 611 612
1951 613 614 615 616 617 618 619 620 621 622 623 624
1952 625 626 627 628 629 630 631 632 633 634 635 636
1953 637 638 639 640 641 642 643 644 645 646 647 648
1954 649 650 651 652 653 654 655 656 657 658 659 660
1955 661 662 663 664 665 666 667 668 669 670 671 672
1956 673 674 675 676 677 678 679 680 681 682 683 684
1957 685 686 687 688 689 690 691 692 693 694 695 696
1958 697 698 699 700 701 702 703 704 705 706 707 708
1959 709 710 711 712 713 714 715 716 717 718 719 720
1960 721 722 723 724 725 726 727 728 729 730 731 732
1961 733 734 735 736 737 738 739 740 741 742 743 744
1962 745 746 747 748 749 750 751 752 753 754 755 756
1963 757 758 759 760 761 762 763 764 765 766 767 768
1964 769 770 771 772 773 774 775 776 777 778 779 780
1965 781 782 783 784 785 786 787 788 789 790 791 792
1966 793 794 795 796 797 798 799 800 801 802 803 804
1967 805 806 807 808 809 810 811 812 813 814 815 816
1968 817 818 819 820 821 822 823 824 825 826 827 828
1969 829 830 831 832 833 834 835 836 837 838 839 840
1970 841 842 843 844 845 846 847 848 849 850 851 852
1971 853 854 855 856 857 858 859 860 861 862 863 864
1972 865 866 867 868 869 870 871 872 873 874 875 876
1973 877 878 879 880 881 882 883 884 885 886 887 888
1974 889 890 891 892 893 894 895 896 897 898 899 900
1975 901 902 903 904 905 906 907 908 909 910 911 912
1976 913 914 915 916 917 918 919 920 921 922 923 924
1977 925 926 927 928 929 930 931 932 933 934 935 936
1978 937 938 939 940 941 942 943 944 945 946 947 948
1979 949 950 951 952 953 954 955 956 957 958 959 960
1980 961 962 963 964 965 966 967 968 969 970 971 972
1981 973 974 975 976 977 978 979 980 981 982 983 984
1982 985 986 987 988 989 990 991 992 993 994 995 996
1983 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008
1984 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020
1985 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032
1986 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044
1987 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
1988 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
99797 Refused
99898 Don't know, don't remember
99999 Not ascertained
Occupational Classification
All occupations are classified according to the 3-digit codes
used in the 1980 U.S. Census. See Appendix 3 for a copy of the
occupational classification system.
Data Quality
Considerable effort has been directed toward cleaning the data,
and producing a consistent data tape. Inconsistencies may
remain. Evaluation of selected data items has identified a few
items for which a specific problem has been identified or which
are of questionable quality and should be analyzed with caution.
These include, in the respondent file, the date the respondent
last attended regular school, pregnancies ending in induced
abortion, date of first sexual intercourse, and date and age when
the respondent used any method of contraception for the first
time, and in the interval file, the date the pregnancy ended, the
duration of the pregnancy, and the date the pregnancy began.
Date the respondent last attended regular school. TL 95-99. If
the respondent was still attending school at the time of the
interview, the interviewer was supposed to code this item 99696.
Some interviewers entered the date of the interview instead.
Thus, the code 99696 will not identify all respondents who are
still attending school.
Pregnancies ending in induced abortion. TL 163-164. As in the
past in surveys of this kind, abortions were under-reported by
NSFG respondents. The number of induced abortions in 1981-85,
(the most recent 5-year period for which comparable data are
available), represents about 41 percent of the number reported
for that period by the Alan Guttmacher Institute (AGI), and about
49 percent of the number reported for that period by the Centers
for Disease Control (CDC). Under-reporting is more severe among
non-white women than white women. The AGI and CDC data come from
providers of abortions services, including public and private
hospitals, clinics, and private physicians.
The reporting of abortions may be less complete in Cycle IV than
in Cycle III. For Cycle III, the number of abortions reported in
the NSFG for the five years before the survey was 47 percent of
the number reported by AGI, compared with 41 percent for 1981-85
for Cycle IV.
With due allowance for sampling variability, estimates of numbers
of live births, miscarriages, and stillbirths correspond fairly
well to information from other data sources. It appears that
rather than misreporting pregnancy outcomes, the majority of the
abortion under-reporting is the result of women not reporting at
all pregnancies that ended in abortions.
Date of first sexual intercourse, TL 338-342. and date of first
sexual intercourse after first menstrual period. TL 383-387.
Date of first sexual intercourse and date of first sexual
intercourse after first menstrual period were determined by
asking the respondent for the date (C-6 or C-9), for her age at
the time (C-7 or C-l0), and whether it was before or after that
birthday (C-8 or C-11) (to be sure that she wasn't rounding her
age to her next birthday). For a great many respondents, these
three pieces of information were inconsistent. The following
decision rules were used to force the three items to be
consistent:
1. Check: (a) the date of first conception (either coded
directly in C-18, or calculated as the date the first pregnancy
ended (B-l4) minus the duration of pregnancy (B-15); and (b) the
earlier of the date of first marriage or first cohabitation (F-
15, F-17, F-19, F-21, F-28, F-31).
2. If any of these are inconsistent with (i.e. earlier than)
the reported date or age at first intercourse, but not both, keep
the consistent entry and edit the inconsistent entry or entries
to be consistent with it. (In editing dates to agree with ages,
keep month or season and change year.)
3. If the earliest date (from 1 above) is inconsistent with
(i.e. earlier than) both age and date, change C-6, C-7, and C-8
(or C-9, C-10, and C-11) to missing (9) for later imputation.
4. If C-6, C-7 and C-8 (or C-9, C-10, and C-11) are
inconsistent with each other and it is not possible to tell which
is correct and which is incorrect--for example, if the dates of
marriage, cohabitation, and pregnancy are blank, or are after
both the reported age and date of first intercourse:
(a) if C-6 and C-7 (or C-9 and C-10) are in agreement,
edit C-8 (C11) to agree. For example, if the date in C-6
suggests that R was 20, and the age in C-7 says that she was 20,
but C-8 says that it was "before" her 20th birthday, change C-8
to "after."
(b) if C-6 (C-9) does not agree with either C-7 (C10)
alone or C-7 as modified by C-8 (C-11), then adjust the date to
agree with the age. For example, if the age calculated from C-6
is 20, and C-7 is 21, and C-8 is "after," then change the date in
C-6 to agree with 21.
The coders were told that if they thought that these rules would
cause them to code C-6 to C-8 (C-9 to C11) incorrectly, they
were to refer the case to NCHS.
Date and age when the respondent used any method of contraception
for the first time. TL 542-546 (date) and TL 547-548 (age).
These two items have a great deal of missing data. It appears
that many respondents misunderstood these two questions.
In many cases the respondent gave an answer that was inconsistent
with other information she had given, so her answer was recoded
to missing.
Date the pregnancy ended. TL 21-25; duration of the pregnancy. TL
28-29; and date the pregnancy began. TL 289-293. Logically, the
date a pregnancy began plus the duration of the pregnancy should
equal the date the pregnancy ended. For many respondents, this
relationship does not hold among the the three variables. These
variables have not been forced to be consistent. The date the
pregnancy ended and the duration of pregnancy were assumed to be
the more accurately reported items, and so these two variables
were used to create related recodes.
Omitted Items
Reproductive health is one of the broad areas of inquiry
addressed by the National Survey of Family Growth. In 1988, with
the growing concern over the spread of HIV infection, the need
for more detailed, population-based data on sexual behaviors
affecting the epidemiology of sexually transmitted diseases and
HIV infection became compelling. The NSFG expanded its inquiry
in these areas, recognizing also the benefits this expansion
would bring to other critical areas of analysis of the NSFG data.
This step also greatly increased the sensitivity of the survey
with respect to any possible disclosures of the information
relating to individual survey respondents.
Keenly aware of its responsibilities to protect the
confidentiality of the personal data which respondents have
voluntarily entrusted to it, the National Center for Health
Statistics has deemed it necessary and prudent to withhold
certain items collected in Cycle IV of the NSFG from public use
data tapes that are made generally available for research and
training uses.
The items withheld are noted on the tape documentation. They
include data on number of sexual partners, self-perceived risk of
contracting an STD or HIV infection, having contracted or
received treatment for such an infection, frequency of sexual
intercourse, changes in sexual behavior to avoid infections, and
use of illicit drugs during one's most recent pregnancy. The
inclusion of these highly personal data would create a heightened
probability of mischievous or inadvertent disclosure.
While these items will not be made generally available on micro-
data tapes, the National Center for Health Statistics wishes to
promote the scientific purposes for which the data were
collected. To this end, the Center could make the data available
to researchers for specified scientific analyses, under special
arrangements that assure confidentiality and protection of the
data commensurable with that provided by the Center itself.
Sample Design, Estimation Procedures, and Variance Estimation
The following summary briefly describes the sample design,
weighting, and variance estimation for the NSFG, Cycle IV. The
summary was taken from a forthcoming report from the National
Center for Health Statistics, National Survey of Family Growth.
Cycle IV: Sample design, weighting, imputation, and variance
estimation. More complete information on the imputation
procedure used in Cycle IV can be found in that report. The
report will not be published before fall 1990. See page 7 for
information on how to obtain a copy.
Sample design. The 8450 women interviewed for the NSFG, Cycle
IV, were drawn from households in which someone had been
interviewed for another NCHS survey, the National Health
Interview Survey, or NHIS, between October of 1985, and March of
1987. If the woman selected for the NSFG had moved since the
NHIS interview, she was followed, or tracked, to her new address,
and interviewed there.
Different numbers of women were available in the NHIS in 1985,
1986, and 1987, so the sampling procedure differed somewhat in
each of these years. The NSFG sampling plan was designed to (1)
select more black women than would have fallen into the sample by
chance, in order to increase the reliability of the data for
black women; and (2) increase the reliability of the data for
nonblack women by reducing the variations in the sampling rates
for nonblack women. The NSFG sampled only one woman per
household, even if more than one eligible woman lived there. The
NSFG selected households in the following way:
for the entire period (December 1985-March 1987), all NHIS
sample households containing one or more eligible black
women but no non-black women were selected; some other
sample households were selected as described in the report.
A simple random sample of women 15-44 in the U.S. would mean that
every woman 15-44 would have the same chance of being selected
for the sample--regardless of where she lived or what her
characteristics were. The NSFG sample is not a simple random
sample for two reasons: (1) only some areas were selected to be
in the sample, while other areas were not; and (2) within areas
included in the sample, women were sampled at different rates.
For example, black women were sampled for the NSFG at a higher
rate than other women, so that reliable statistics could be
produced for black women. As a result, interviews were completed
with 2771 black women and 5679 women of other races. Certain
other women (described in the report) were also sampled at higher
rates. Therefore the NSFG data must be weighted, and estimates
of sampling errors should be made using the techniques discussed
below.
The response rate to the NHIS, on which the NSFG was based, was
96 percent. Of the sampled women selected from responding NHIS
households for the NSFG, the simple response rate to the NSFG was
80 percent. However this simple response rate does not take into
account the subsampling for nonresponse (described in the report)
which was a part of the intensive followup--the last stage of
interviewing. NCHS prefers to take this subsampling into account
when calculating the response rates. When this is taken into
account, the response rate to the NSFG was 82 percent of the
women in the NHIS. Thus, the total response rate is 96 percent
times 82 percent, or about 79 percent.
Weighting.--The NSFG is intended to produce national estimates of
the number, as well as the percentage, of women with certain
characteristics--such as the number using the pill, the number
infertile, or the number who used family planning services in the
last year. In order to produce these national estimates, each
woman interviewed was given a sampling weight, which is the
number of women in the population that she represents. The
weights were made in 4 main steps: the first is the baseweight,
which is the reciprocal of the probability that the woman was
selected for the sample. For example, if the probability that a
certain woman was selected was 1 out of 6000, her baseweight
would be 6000. The second stage of weighting was trimming; cases
with very large weights were reduced to a maximum value. The
third stage of weighting was an adjustment for nonresponse.
Certain categories of women were less likely than others to be
found at home and interviewed, so adjustment for nonresponse
attempts to correct for this. The fourth stage is called post-
stratification; this is adjusting the NSFG totals to a known
number of women by age, race, marital status, and parity (the
number of live births the woman has had) obtained from the U.S.
Bureau of the Census.
The preliminary weights as well as the final post-stratified
weight appear on the Public Use Tape in TL 2540-2574 in the
Respondent file and TL 338-372 in the Interval file.
Variance estimation.--Variance is a measure of how much a
statistic (such as a percent or an average) can vary in different
samples. In a simple random sample, the probability that a
person will be selected for the sample is the same for all
persons in the population. However, the NSFC- (and the NHIS, on
which the NSFG was based) was not based on a simple random
sample; the probabilities of selection varied by area, by race
and by other variables. Therefore, variance estimates in many
standard computer packages and many statistics textbooks will be
too small when applied to the NSFG. We recommend that
researchers use the weights, variance formulas, and variance
estimation techniques described here to estimate sampling errors
for the NSFG.
NSFG variances were estimated using a technique called Balanced
Repeated Replication. This procedure estimates the standard
error for survey estimates (such as percentages or numbers) using
parts of the whole sample. In the NSFG, tables were designed
using a number of dependent and independent variables. Sampling
errors were calculated for the weighted numbers in these tables.
The ratios of the variance to the square of the weighted number
were plotted against the inverse of the weighted number, and a
weighted least-squares line was fit to those points. The
intercept and slope for these lines are given in Appendix 6; they
can be used to estimate the standard errors of percentages and
weighted numbers from the NSFG.
If researchers wish to estimate variances for other statistics,
such as averages or regression coefficients, they can use
balanced repeated replication, as described in the detailed
report from which this summary was taken. The 100 replicate
weights necessary for such estimates appear in TL 2754-3553 of
both the Respondent and Interval files.
KEY TO DOCUMENTATION
The following sections document the contents of the Respondent
and the Interval files. The first part of each section consists
of an index listing the questionnaire items and the recedes along
with the tape location for each item. The list of recodes also
shows the tape location of the imputation flag for that recode,
and a mnemonic variable label. The second part of each section
is the documentation of the tape contents.
The documentation of the tape contents is adapted from the
documentation of the original data file supplied by Westat, Inc.,
the fieldwork contractor. The data were originally keypunched in
a record and column format, and the record and column numbers
have been retained in the documentation; the original record
number is shown in the upper right-hand corner of each page, and
the original column numbers are shown in parentheses underneath
the tape location.
For each item, the documentation includes the question name or
number, the text of the question, the numerical categories into
which responses were coded, and detailed category descriptions.
The documentation also shows the numbers of respondents in each
response category, separately for black women, white women, other
women, and women of all races combined. These marginal
distributions are raw unweighted counts of sample women or
pregnancy intervals; they are not estimates of numbers or
distributions for the population represented by the sample. To
make such estimates, sample cases must be weighted. The
unweighted marginal distributions are provided only as a guide to
the analyst, who often wants to know in advance if the number of
cases in a particular category is large enough to sustain a
particular type of analysis.
RECORD LAYOUT
Respondent File Index - Questionnaire Items by Tape Location
Tape Locations 1-23
Respondent file index
List of questionnaire items by tape location
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
1-5 Case ID number
6-7 Record type
8-10 Blank
11 Questionnaire Type
12-16 Date interview conducted
17-23 Blank
Introduction, Reproductive Knowledge, Sex Education (Loc 24-156)
INTRODUCTION, REPRODUCTIVE KNOWLEDGE,
AND SEX EDUCATION
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
24 Al Current marital status
25 A2 Formal marital status
26-30 A3 Date of birth
31-32 Blank
33-35 A4 State where R was born
36-37 A5 Age
38 A6 Respondent assessment of amount of
accurate reproductive information
provided to young people today
39 A7A Ever talked with parents about female
monthly cycle
40 A7B Ever talked with parents about how
pregnancy occurs
41 A7C Ever talked with parents about
venereal disease
42 A7D Ever talked with parents about
methods of birth control
43 *A8 With which parent(s) did R discuss
44 A9A Before age 18, whether any formal
instruction on the female monthly
cycle
45 *A10AA Formal instruction in elementary
school
46 *A10AB Formal instruction in high school
47 *A10AC Formal instruction in church or
religious school
48 *A10AD Formal instruction at community
center or youth organization
49 *A10AE Formal instruction at family
planning clinic
50 *A10AF Formal instruction at some other
place
51 A9B Before age 18, whether any formal
instruction on how pregnancy occurs
52 *A10BA Formal instruction in elementary
school
53 *A10BB Formal instruction in high school
54 *A10BC Formal instruction in church or
religious school
55 *A10BD Formal instruction at community
center or youth organization
56 *A10BE Formal instruction at family
planning clinic
57 *A10BF Formal instruction at some other
place
58 A9C Before age 18, whether any formal
instruction on venereal disease
59 *A10CA Formal instruction in elementary
school
60 *A10CB Formal instruction in high school
61 *A10CC Formal instruction in church or
religious school
62 *A10CD Formal instruction at community
center or youth organization
63 *A10CE Formal instruction at family
planning clinic
64 *A10CF Formal instruction at some other
place
65 A9D Before age 18, whether any formal
instruction on methods of birth
control
66 *A10DA Formal instruction in elementary
school
67 *A10DB Formal instruction in high school
68 *A10DC Formal instruction in church or
religions school
69 *A10DD Formal instruction at community
center or youth organization
70 *A10DE Formal instruction at family
planning clinic
71 *A10DF Formal instruction from some other
place
72-73 A11 Age when R first received formal
instruction on methods of birth
control
74-75 A12 Highest grade of school R ever
attended
76 A13 Did R complete that grade or year
77 *Al4 Ever dropped out of school and then
retuned
78-79 *A15 Number of times R dropped out and
then returned
80-84 *Al6 Date R first dropped out
85-86 *A17 Grade in which R was enrolled at the
time
87-91 *A18 Date R returned to class
92 Whether R has completed 12 or more
grades, or 11 or fewer grades
93-94 A19,A20 Whether R has a high school diploma
or a GED
95-99 A21 Date R last attended school
100-102 Blank
103 A22 Ever attended a church-related school
104-139 A23G1- Grades during which R attended
A23G18 church-related school
140 A24 Church or religious group associated
with R's school
141 A25 Living with own mother and father at
age 14
142 A26 Reason not living with one or both
143-144 A27 With whom did R live at age 14
145 A28 Strictness of rules when R was 14
146-147 A29 Mother's education
148 A30 Did R's mother work when R was
growing up
149-151 A31,A31A R's mother's age at first birth
152-154 Blank
155,156 A33,BOX3 Has R had period in last 30 days
Births and Pregnancies (Tape Locations 157-257)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
BIRTHS AND PREGNANCIES
157 B1 Whether R currently pregnant
158 B2 DK probe: Does R think pregnant or
not
159-166 B3 Number of pregnancies ending in
miscarriage, still birth, abortion,
and live birth
167-168 B4 Total number of pregnancies
169 Blank
170 BOX4 Ever been pregnant
171-184 *B5A-B5G Labor force status at time of (first)
pregnancy
185-206 *B6A-B6K With whom living at time of (first)
pregnancy
207 *BOX5 Whether R living with husband
208-209 *B7 Time during pregnancy that R first
discussed fact of pregnancy with
baby's father
210-211 *B8 Time during pregnancy that R first
discussed fact of pregnancy with her
parents
212 *BOX6 Whether R currently pregnant with
first pregnancy
213 *B9BOX Whether less than six months since
R's first pregnancy ended
214-229 *B9A-B9H Labor force status six months after
first pregnancy ended
230-251 *B10A-B10K With whom was R living six months
after pregnancy ended
252-253 Total number of pregnancies
254-255 Total number of live births
256 Respondent currently pregnant
257 BOX15 Marital status (ever married or
cohabited)
Stepchildren and Adoptions (Tape Locations 258-309)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
STEPCHILDREN AND ADOPTIONS
258 B47 Ever brought up any of
husband's/partner's children
259-260 B48 Number of husband's/partner's
children R brought up
261 B49 Whether any adopted children
262-263 B50 Number of children adopted
First adopted child
264 B51C1 Child's relationship to R before
adoption
265 B52C1 Place of adopted child's birth
266-270 B53C1 Child's date of birth
271-275 B54C1 Date child began living with R
276 B55C1 Adoption arranged through public or
private agency
Second adobted child
277 B51C Child's relationship to R before
adoption
278 B52C Place of adopted child's birth
279-283 B53C2 Child's date of birth
284-288 B54C2 Date child began living with R
289 B55C2 Adoption arranged through public or
private agency
Third adopted child
290 B51C3 Child's relationship to R before
adoption
291 B52C3 Place of adopted child's birth
292-296 B53C3 Child's date of birth
297-301 B54C3 Date child began living with R
302 B55C3 Adoption arranged through public or
private agency
303 B56 Ever contacted an adoption agency or
lawyer about adopting a(nother) child
304 B57A Formally applied to adoption agency
305 B57B Engaged a lawyer to make arrangement's
for an adoption
306 B57C Had a home study completed
307 B57D Ever had a child come to live with R
in preparation for adoption
308 B58 Still actively seeking to adopt
309 Blank
Contraceptive Background (Tape Locations 310-558)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
CONTRACEPTIVE BACKGROUND,
Whether R knows how to use:
310 C1A Condom
311 C1B Condom and Foam
312 C1C Diaphragm
313 C1D Douching after intercourse
314 C1E Foam
315 C1F IUD
316 C1G Jelly or cream
317 C1H Pill
318 C1I Rhythm
319 CIJ Natural family planning
320 C1K Female sterilization operation
321 C1L Suppository
322 C1M Today sponge
323 C1N Vasectomy
324 C1P Withdrawal
325 C1Q1 Whether R knows any other method
326-327 C1Q2 What other methods R knows
328-329 C2A Most effective contraceptive method
330-331 C2B Next most effective contraceptive
method
332-333 C2C Least effective contraceptive method
334 C3 Which more effective: natural family
planning or rhythm by calendar
335 C4 During menstrual cycle, when is
average, woman most likely to become
pregnant
336 BOX17 R ever pregnant or ever married
337 C5 Ever had sexual intercourse
338-342 C6 Date of first sexual intercourse
343-344 Blank
345 C7A Age at first intercourse - less than
18, or 18 or older
346 C7B Age at first intercourse - less than
15 or 15 or older
347 C7C Age at first intercourse - less than
20, or 20 or older
348-382 Blank
383-387 C9 Date of first sexual intercourse
after first menstrual period
388-389 Blank
390 C10A Age at first intercourse after first
menstrual period - less than 18, or
18 or older
391 C10B Age at first intercourse after first
menstrual period - less than 15, or
15 or older
392 C10C Age at first intercourse after first
menstrual period - less than 20, or
20 or older
393-396 Blank
397 BOX20 Date first pregnancy ended (before or
after January 1984)
398-399 Total number of pregnancy intervals
400-404 C26&C28 Beginning date of first period of
nonintercourse in open interval
(century month)
405-409 C26&C28 Ending date of first period of
nonintercourse in open interval
(century month)
410-414 C26&C28 Beginning date of second period of
nonintercourse in open interval
(century month)
415-419 C26&C28 Ending date of second period of
nonintercourse in open interval
(century month)
420-424 C26&C28 Beginning date of third period of
nonintercourse in open interval
(century month)
425-429 C26&C28 Ending date of third period of
nonintercourse in open interval
(century month)
430 C27 Has R had any periods of
nonintercourse in open interval
431 C29 Since first intercourse/last
pregnancy ever used method of birth
control for one month or more
432 BOX26 Whether R currently in period of
non-intercourse
433-435 C30M1 First method used
436-440 C31M1 Beginning date of first method
(century month)
441 BOX27Ml Is method: female sterilization, last
method
442 C32M1 Respondent and partner still using
443-447 C33M1 Ending date of first method (century
month)
448-450 C30M2 Second method used
451-455 C31M2 Beginning date of second method
(century month)
456 BOX27M2 Is method: female sterilization, last
method
457 C32M2 Respondent and partner still using
458-462 C33M2 Ending date of second method (century
month)
463-465 C30M3 Third method used
466-470 C31M3 Beginning date of first method
(century month)
471 BOX27M3 Is method: female sterilization, last
method
472 C32M3 Respondent and partner still using
473-477 C33M3 Ending date of third method (century
month)
478-480 C30M4 Last method used
481-485 C31M4 Beginning date of last method
(century month)
486 BOX27M4 Is method: female sterilization, last
method
487 C32M4 Respondent and partner still using
488-492 C33M4 Ending date of last method (century
month)
493 BOX28 Whether R is in a period of non-
intercourse
494 C34 Whether reason for current non-use is
wants pregnancy as soon as possible
495 C35 Whether partner wants pregnancy as
soon as possible
496 BOX29 Whether R is currently using the pill
497-498 C37 Brand of pill R is currently using
499 C38BOX Whether R has used any method for a
month or more
500 C38 In addition to methods mentioned has
Respondent used any other method to
delay or prevent pregnancy
501 C39 Have R and partner ever used any
method at all even if only one time
502-533 C40A-C40Q Which methods: first mention
534 BOX30 Total number of methods R has ever
used
535 *BOX3l What is R's only method
536-538 C41 First method ever used
539-540 *C42 Source of first method ever used
541 C43 Timing of use of first method (in
relation to first intercourse)
542-546 C43A Date of use of first method
547-548 C43B Age at use of first method
549 BOX32 Is current method female
sterilization
550 C44 Whether R used contraception at last
intercourse
551-553 C45 Method used at last intercourse
554 Blank
5-5 BOX33 Whether R's current method requires a
source
556 *BOX3 4 Whether current method is same as
first method
557-558 C47 First source of current method
Method Calendar (Tape Locations 559-803)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
METHOD CALENDAR
Ever used:
559 CMETHA Condom
560 CMETHB Condom and foam
561 CMETHC Diaphragm
562 CMETHD Douching after intercourse
563 CMETHE Foam
564 CMETHF IUD
565 CMETHG Jelly or cream
566 CMETHH Pill
567 CMETHI Rhythm by calendar
568 CMETHJ Natural family planning
569 CMETHK Female sterilization
570 CMETHL Suppository
571 CMETHM Today sponge
572 CMETHN Vasectomy
573 CMETHP Withdrawal
574 CMETHQ Other method
575-622 CJAN84- Method used for each month of 1984
CDEC84
623-670 CJAN85- Method used for each month of 1985
CDEC85
671-718 CJAN86- Method used for each month of 1986
CDEC86
719-766 CJAN87- Method used for each month of 1987
CDEC87
767-798 CJAN88- Method used for each month of 1988
CAUG88
799-803 CMOIMO Date of interview
Sterility and Subfecundity (Tape Locations 804-1015)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
STERILITY AND SUBFECUNDITY
804 BOX35 R currently pregnant
805 D1 Has R or husband/partner had
operation that would prevent
conceiving child
806 BOX36 Whether R currently married or living
with partner
807 B0X37A Whether "other", operation affects
only one tube or ovary
808 B0X37B Whether R or husband/partner
completely sterile from "other"
operation
809 D2OP1 Type of operation - both ovaries
removed
810-814 D3OP1MO Date of operation
815 D4OP1 Place where operation was performed
816-821 D5AOP1- Reasons for operation - record
D5COP1 verbatim
822-839 D6AOP1- Reasons for operation - choose answer
D6IOP1 from card
840 D2OP2 Type of operation - both tubes tied,
cut, or removed
841-845 D3OP2MO Date of operation
846 D4OP2 Place where operation was performed
847-852 D5AOP2- Reasons for operation - record
D5COP2 verbatim
853-870 D6AOP2- Reasons for operation - choose answer
D6IOP2 from card
871 D2OP3 Type of operation - hysterectomy
872-876 D3OP3MO Date of operation
877 D4OP3 Place where operation was performed
878-883 D5AOP3- Reasons for operation - record
D5COP3 verbatim
884-901 D6AOP3- Reasons for operation - choose answer
D6IOP3 from card
902 D2OP4 Type of operation - vasectomy
903-907 D3OP4MO Date of operation
908 D4OP4 Place where operation was performed
909-914 D5AOP4- Reasons for operation - record
D5COP4 verbatim
915-932 D6AOP4- Reasons for operation - choose answer
D6IOP4 from card
933 D2OP5 Type of operation - other or unknown
934-938 D3OP5MO Date of operation
939 D4OP5 Place where operation was performed
940-945 D5AOP5- Reasons for operation - record
D5COP5 verbatim
946-963 D6AOP5- Reasons for operation - choose answer
D6IOP5 from card
964 D7 Fecundity status before the operation
965 D8 Whether R would like to have a baby,
if it were possible (R or husband has
had sterilizing operation)
966 B0X39 Whether R has had both tubes tied
only or husband/partner had vasectomy
only
967 D9 Whether R would like to have
operation reversed
968 B0X40 Whether R currently married or living
with a partner
969 D10 Whether husband would like to have
operation reversed
970 D11 Whether physically possible for R to
conceive ( R married or living with
partner)
971 D12 Whether physically possible for R's
husband/partner to father a child
972 B0X41 Whether impossible for R or partner
to have child
973 D13 Whether physically possible for R to
conceive (R not married and not
living with partner)
974-987 D14A-D14G Reason physically impossible to have
a(nother) baby
988 B0X42 Whether only reason for sterility is
that periods have not started
989-993 D15MO Date it became impossible to have
another baby
994 D16 Whether R would like to have
a(nother) baby, if it were possible
(R or husband sterile from causes
other than operation)
995 D17 Problem or difficulty for R or
husband to conceive or deliver
a(nother) baby
996-1007 D18A-D18F Reason it would be difficult to have
another baby
1008 D19 Whether Doctor advised never to
become pregnant
1009 D20 Pregnancy dangerous for R, and/or the
baby, or for some other reason
1010 D21 Whether R will have operation to
avoid pregnancy
1011 B0X43 Whether R currently married or living
with partner
1012 D22 Whether husband will have operation
to avoid pregnancy
1013 D23 Whether R will have any future
pregnancies terminated
1014 D24 Whether R would like to have
a(nother) baby, if it were possible
(not sterile)
1015 Blank
Births Intended and Expected (Tape Locations 1016-1055)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
BIRTHS INTENDED AND EXPECTED
1016 D25&D32 Intend to have another baby
1017-1018 D26&D33 Number of additional babies intended
1019 D27&D34 How sure of number intended
1020-1021 D28&D35 Largest number of (additional) babies
expected
1022-1023 D29&D36 Smallest number of (additional)
babies expected
1024 Blank
1025-1026 D30&D37 When R expects to have next baby
1027-1028 D31&D38 Age at which R expects to have last
baby
1029-1030 D39 Number of children would like to have
if could choose now
1031-1032 D40 DK probe: Number if R could choose
1033-1034 D41 Which single number in range
1035 BOX47 Whether R has ever had intercourse
1036-1037 D26&D33A First part of range in D26 or D33
1038-1039 D26&D33B Second part of range in D26 or D33
1040-1041 D30&D37A First part of range in D30 or D37
1042-1043 D30&D37B Second part of range in D30 or D37
1044-1045 D31&D38A First part of range in D31 or 38
1046-1047 D31&D38B Second part of range in D31 or 38
1048-1049 D39A First part of range in D39
1050-1051 D39B Second part of range in D39
1052-1053 D40A First part of range in D40
1054-1055 D40B Second part of range in D40
Infertility Services (Tape Locations 1056-1095)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
INFERTILITY SERVICES
1056 E1 Whether R or husband ever visited
doctor or clinic to talk about ways
to help R become pregnant
1057 E2 Whether R or husband ever visited
doctor or clinic to talk about ways
to help R prevent miscarriage
1058 BOX48 Whether R and/or husband received
treatment or advice
1059-1078 E3A-E3J Kinds of medical treatment/advice
received by Respondent
1079-1083 E4MO Date of last visit for infertility
treatment or advice
1084-1085 E5 Source of last infertility
treatment/advice
1086 E6 Whether R was able to have baby after
treatment/advice
1087 E7 Ever had sterilization reversal
1088-1093 E8A-E8C Kind of reversal
1094 E9 Whether reversal was successful
1095 0OX49 Whether R or Husband became sterile
or had a sterilizing operation before
January 1987
Family Planning Services (Tape Locations 1096-1460)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
FAMILY PLANNING SERVICES
In the past 12 months has R visited a
doctor or clinic:
1096 E10A To get a pregnancy test
1097 E10B To continue a method of birth control
1098 E10C To get a new method of birth control
1099 E10D To get a sterilizing operation
In the past 12 months has R had a
check-up or medical test for:
1100 E11E Correct use, fit, or position of a
birth control method
1101 E11F Health problems from using a birth
control method
In the past 12 months has R received
advice or counseling about:
1102 E12G Birth control
1103 E12H Any problems or worries about sexual
intercourse
1104 E12I An unwanted pregnancy or one that
occurred at a bad time
1105 E12J Having a sterilizing operation
1106 E12K Whether or not to have an abortion
1107 BOX50 Whether R reported any visits in past
12 months
1108-1133 E13A-E13M Source of family planning services in
the past 12 months
1134 E14 Whether R received services from
listed Title 10 clinic
1135-1137 E14A-E14C Whether R received services from
other Title 10 clinic
1138-1140 Blank
1141-1142 E16 Number of family planning visits in
last 12 months
1143 B0X51 Whether only one kind of place
reported for visits
1144-1145 E17 Number of visits to clinics in last
12 months
1146-1147 E18 Number of visits to private medical
services in last 12 months
1148 E19A Had Pap smear at family planning
visit in past 12 months
1149 E20A Had Pap smear at other medical visit
in past 12 months
1150 E19B Had pelvic exam at family planning
visit in past 12 months
1151 E20B Had pelvic exam at other medical
visit in past 12 months
1152 E19C Had breast exam at family planning
visit in past 12 months
1153 E20C Had breast exam at other medical
visit in past 12 months
1154 E19D Had blood pressure test at family
planning visit in past 12 months
1155 E20D Had blood pressure test at other
medical visit in past 12 months
1156 E19E Had urinalysis at family planning
visit in past 12 months
1157 E20E Had urinalysis at other medical visit
in past 12 months
1158-1161 Blank
1162 E21 Ever had a family planning visit
1163-1167 E22MO Date of most recent visit
1168-1169 E22A Age at most recent visit
1170 E22B Before birthday or after
1171 BOX52 Number of visits in last 12 months
1172-1193 E23A-E23K Services received at last visit
1194-1195 E24 Source of last family planning visit
1196-1207 E25A-E25F Way in which last family planning
visit bill paid
1208-1212 E26MO Date of first family planning visit
1213-1214 E26A DK probe: Age at first family
planning visit
1215 E26B Before birthday or after
1216 E26C Whether before or after first
intercourse
1217 E26D How long after first intercourse
1218 B0X53 Ever been pregnant
1219 E26E Whether before or after first
pregnancy
1220-1241 *E27A-E27K Services received at first visit
1242-1243 *E28 Source of first family planning visit
1244-1255 *E29A-E29F Referral source for first family
planning visit
1256-1267 *E30A-E30F Way in which first family planning
visit bill paid
1268 BOX54 Whether only service at first visit
was pregnancy test
1269-1273 *E31MO Date of first family planning visit
after visit for pregnancy test only
1274-1276 Blank
1277-1298 *E32A-E32K Services received at first family
planning visit after visit for
pregnancy test only
1299-1300 *E33 Source of first family planning visit
1301 E34 after visit for pregnancy test only
1302 E35 Whether R douches regularly
When R douches
1303 E36 How soon after intercourse R douches
1304 E37 Freguency of douching
1305 E38 Ever been treated for PID
1306-1307 E39 Number of times treated for PID
1308-1312 E40MO Date first treated for PID
1313-1317 E41MO Date last treated for PID
1318 E42 Number of times hospitalized for PID
Had doctor ever told R that she has:
1319 E43A Diabetes
1320 E43B Peritonitis
1321 E43C Sickle cell anemia
1322 E43D High blood pressure
1323 Blank
1324 E43F Endometriosis
1325 Blank
1326 E43H Vaginitis
1327 E44 Ever heard of genital herpes
1328-1339 E45A-E45F Where R heard of genital herpes
1340 Blank
1341 B0X55 Whether R currently married or living
with partner
1342-1344 Blank
1345 E49 R's assessment of her chances of
getting genital herpes
1346 E50 Ever heard of Chlamydia
1347-1358 E51A-E51F Where R heard of chlamydia
1359-1360 Blank
1361 E54 R's assessment of her chances of
getting chlamydia
1362 E55 Ever heard of AIDE
1363-1380 E56AA-E56AI Activities from which a person can
get the AIDS virus
1381 E56B Possible to get AIDS from someone who
has the virus but not the disease
1382 E57 R's assessment of her chances of
getting AIDS
1383 B0X57 Ever had sexual intercourse
Method R uses to keep from catching
diseases:
1384 E58A Condom
1385 E58B Diaphragm
1386 E58C Spermicide jelly, foam, or cream
1387 E58D Sponge
1388 E58E No methods used for this purpose
1389 B0X58 Whether R has ever heard of AIDS
Method R began to use for protection
since she first heard about AIDS:
1390 E59A Condom
1391 E59B Diaphragm
1392 E59C Spermicide jelly, foam, or cream
1393 E59D Sponge
1394 E59E No methods used for this purpose
1395-1427 Blank
1428 B0X60 Whether R has had a family planning
visit in past 12 months
In past 12 months as part of general
check-up or other medical visit, has
R had:
1429 E62A Pap smear
1430 E62B Pelvic exam
1431 E62C Breast exam
1432 E62D Blood pressure test
1433 E62E Urinalysis
1434-1435 Blank
1436 B0X61 Pregnancy status
1437-1442 E63 R living at current address or
different address when last pregnancy
began
1443-1445 E64 Length of residence there at time
pregnancy began
1446 E65 Whether R smoked cigarettes during 12
months before end of last pregnancy
1447-1448 E66 Number of cigarettes R smoked per day
before she found out she was pregnant
1449-1450 E67 Number of cigarettes R smoked per day
after she found out she was pregnant
1451-1452 E68 Frequency of drinking alcoholic
beverages during last pregnancy
Ever took any of the following drugs
or medications during last pregnancy
1453 E69A Tranquilizers
1454 E69B Stimulants
1455 E69C Sedatives
1456-1460 Blank
Family Background and Education (Tape Location 1461-1467)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
FAMILY BACKGROUND AND EDUCATION
1461 F1 Race of respondent: interviewer
observation
1462-1464 F2 Duration of residence at current
address
1465-1467 F3 Duration of residence in current
state of residence
Religion (Tape Locations 1468-1473)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
RELIGION
1468 F4 Respondent's religion
1469-1470 F5 Denomination
1471 F6 Frequency receives communion
1472 F7 Frequency of attendance at religious
services
1473 F8 Frequency of attendance at age 14
Race and Ethnic Background (Tape Locations 1474-1515)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
RACE AND ETHNIC BACKGROUND
1474-1477 F9A-F9D Self-reported race
1478 Blank
1479 BOX62 Whether R mentioned more than one
race
1480 F10 Race that best describes R
1481-1512 F11A-F11P National origin or ancestry
1513 BOX63 Whether R mentioned more than one
national origin
1514-1515 F12 National origin that best describes R
Marital History (Tape Locations 1516-1678)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
MARITAL HISTORY
1516 BOX64 Current marital status
1517-1518 F13 Number of times married (including
current)
1519 F14 Number of time formally married
1520 BOX65 Current marital status
1521-1525 F15MO Date of current/only marriage
1526-1527 Blank
1528 F16 Whether lived with current/only
husband before marriage
1529-1533 F17MO Date started living together
1534-1536 F18 DK Probe: Duration of cohabitation
before marriage
1537 BOX66 Whether R married more than once
1538-1542 F19M1MO Date of first marriaqe
1543-1544 Blank
1545 F20M1 Whether lived with first husband
before marriage
1546-1550 F21M1MO Date started living together
1551-1553 F21AM1 DK Probe: Duration of cohabitation
before marriage
1554 F23M1 Type of dissolution
1555-1559 F24M1MO Date first husband died
1560-1564 F25M1MO Date R and first husband stopped
living together (divorced)
1565-1569 F26M1MO Date divorce/annulment
1570-1574 F27M1MO Date R and first husband stopped
living together (separated)
1575-1579 F19M2MO Date of second marriage
1580-1581 Blank
1582 F23M2 Type of dissolution
1583-1587 F24M2MO Date second husband died
1588-1592 F25M2MO Date R and second husband stopped
living together (divorced)
1593-1597 F26M2MO Date of divorce/annulment
1598-1602 F27M2MO Date R and second husband stopped
living together (separated)
1603-1607 F22M3MO Date of most recent marriage
1608-1609 Blank
1610 F23M3 Type of dissolution
1611-1615 F24M3MO Date most recent husband died
1616-1620 F25M3MO Date R and most recent husband
stopped living together (divorced)
1621-1625 F26M3MO Date of divorce/annulment
1626-1630 F27M3MO Date R and most recent husband
stopped living together (separated)
1631 BOX69 Whether R currently living with a
partner
1632-1636 F28MO Date started living together
1637-1639 F29 DK Probe: How long lived together
1640 F30 (Besides times previously mentioned)
whether R has ever lived with a
partner without being married to him
1641-1645 F31MO (Besides husband(s)) date started
living with first partner
1646-1648 F32 Length of cohabitation
1649-1675 Blank
1676 BOX72 Current marital status
1677-1678 F35 Education at first marriage
Background of First Husband (Tape Locations 1679-1690)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
BACKGROUND OF FIRST HUSBAND
1679 BOX73 Whether R married more than once
1680-1684 F36MO Date of birth of first husband
1685-1686 Blank
1687-1688 F36A First husband's age at marriage
1689-1690 F37 Education of first husband at
marriage
Background of Current Husband/Partner (Tape Locations 1691-1753)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
BACKGROUND OF CURRENT (OR MOST
RECENT) HUSBAND
OR CURRENT PARTNER
1691-1695 F38MO Date of birth of current/most recent
husband or current partner
1696-1697 Blank
1698-1699 F38A Current/most recent husband's/
partner's age at marriage
1700-1701 F39 Education of current/most recent
husband/partner
1702-1703 F40 Education of current/most recent
husband/partner at marriage/beginning
of cohabitation
1704 F41 Religion of current/most recent
husband/partner
1705-1708 F42A-F42D Race of current/most recent
husband/partner
1709 Blank
1710 BOX74 Whether more than one race was
mentioned
1711 F43 Race that best describes current/most
recent husband/partner
1712-1743 F44A-F44P National origin of current/most
recent husband/partner
1744 BOX75 Whether more than one national origin
was mentioned
1745-1746 F45 National origin that best described
current/most recent husband/partner
1747 BOX76 Whether R currently living with a
partner
1748 F46 Whether partner has ever been married
1749 F47 Whether this is current husband's
first marriage
1750 F48 Whether husband has children from
previous marriage
1751 F49 Where children are living
1752 F50 Whether contributes regularly to
their support
1753 F51 Whether last former husband had been
married before
Employment, Occupation (Tape Locations 1754-1825)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
EMPLOYMENT, OCCUPATION
1754 BOX77 Number of pregnancies ending in live
birth R has had
1755 F52,F53, Work for pay before first or only
F54,F55 birth
1756 F53,F54,F55 Work for pay between birth of first
and birth of second child
1757 F54,F55 Work for pay between birth of second
and birth of third child
1758 F55 Work for pay between birth of third
and birth of last child
1759 BOX78 Work before last birth
1760-1761 F56 How long before birth of last child
did Respondent stop working
1762 F57 Whether R quit, was fired, or took
leave
1763 F58 Employer paid maternity or sick leave
1764-1766 F59 Weeks of leave employer paid for
1767-1769 F60 Months worked for employer before
last birth
1770 F61 Working full-time or part-time before
last birth
1771 F62 Work for pay since birth of last
child
1772-1776 F63MO Date began work after last child was
born
1777 F64 Full-time or part-time
1778 F65 Ever worked for pay
1779-1794 F66A-F66H Employment status last week
1795 BOX79 Ever worked
1796-1797 F67HOUR Time began work last week (hour)
1798-1799 F67MIN Time began work last week (minute)
1800-1801 F68HOUR Time ended work last week (hour)
1802-1803 F68MIN Time ended work last week (minute)
1804 F69 Same shift or rotating shift
1805-1807 F70 Current/last occupation
1808-1810 F72 Current/last business or industry
1811-1815 F73MO Date started working at this job
1816 B0X80 Current employment status
1817-1821 F74M0 Date stopped working at this job
1822-1823 F75 Number of hours worked per week
1824-1825 F76 Earnings in past 12 months
Child Care (Tape Locations 1826-2039)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
CHILD CARE
1826 BOX81 Whether R is currently employed or
going to school
1827 BOX82 Whether R has own, step, or adopted
children aged 0-12 in household
1828-1829 Number of child care records
Child #1
1830-1853 F77EX_1- Type of child care
F77K-1
1854 BOX83_1 Whether more than one type of care is
listed
1855-1856 F78_1 Main source of care
1857 BOX84_1 Whether only or main source is day
care center, nursery school, R works
at home, or R cares for child at work
1858 F79_1 Where child was cared for
1859-1860 F80_1 Average number of hours of child care
per week
1861-1863 F81_1 Average cost per week
1864 F82_1 Whether any care provided through
non-money arrangement
Child #2
1865-1888 F77EX_2- Type of child care
F77K-2
1889 BOX83_2 Whether more than one type of care is
listed
1890-1891 F78_2 Main source of care
1892 BOX84_2 Whether only or main source is day
care center, nursery school, R works
at home, or R cares for child at work
1893 F79_2 Where child was cared for
1894-1895 F80_2 Average number of hours of child care
per week
1896-1898 F81_2 Average cost per week
1899 F82_2 Whether any care provided through
non-money arrangement
Child #3
1900-1923 F77EX_3- Type of child care
F77H_3
1924 BOX83_3 Whether more than one type of care is
listed
1925-1926 F78_3 Main source of care
1927 BOX84_3 Whether only or main source is day
care center, nursery school, R works
at home, or R cares for child at work
1928 F79_3 Where child was cared for
1929-1930 F80_3 Average number of hours of child care
per week
1931-1933 F81_3 Average cost per week
1934 F82_3 Whether any care provided through
non-money arrangement
Child #4
1935-1958 F77EX_4 Type of child care
F77K_4
1959 BOX83_4 Whether more than one type of care is
listed
1960-1961 F78_4 Main source of care
1962 BOX84_4 Whether only or main source is day
care center, nursery school, R works
at home, or R cares for child at work
1963 F79_4 Where child was cared for
1964-1965 F80_4 Average number of hours of child care
per week
1966-1968 F81_4 Average cost per week
1969 F82_4 Whether any care provided through
non-money arrangement
Child #5
1970-1993 F77EX_5 Type of child care
F77K 5
1994 BOX83_5 Whether more than one type of care is
listed
1995-1996 F78_5 Main source of care
1997 BOX84_5 Whether only or main source is day
care center, nursery school, R works
at home, or R cares for child at work
1998 F79_5 Where child was cared for
1999-2000 F80_5 Average number of hours of child care
per week
2001-2003 F81_5 Average cost per week
2004 F82_5 Whether any care provided through
non-money arrangement
Child #6
2005-2028 F77EX_6 Type of child care
F77K_6
2029 BOX83_6 Whether more than one type of care is
listed
2030-2031 F78_6 Main source of care
2032 BOX84_6 Whether only or main source is day
care center, nursery school, R works
at home, or R cares for child at work
2033 F79_6 Where child was cared for
2034-2035 F80_6 Average number of hours of child care
per week
2036-2038 F81_6 Average cost per week
2039 F82_6 Whether any care provided through
non-money arrangement
Husband's/Partner's Employment (Tape Locations 2040-2072)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
HUSBAND'S/PARTNER'S EMPLOYMENT
2040 BOX86 Current marital status
2041-2054 F83A-F83G Employment status of husband/partner
last week
2055-2056 F84HOUR Time husband/partner began work last
week (hour)
2057-2058 F84MIN Time husband/partner began work last
week (minute)
2059-2060 F85H0UR Time husband/partner ended work last
week (hour)
2061-2062 F85MIN Time husband/partner ended work last
week (minute)
2063 F86 Same shift or rotating shift
2064 F87 Husband/partner ever worked for pay
2065-2067 F88 Husband's/partner's current/last
occupation
2068-2070 F90 Current/last business or industry
2071-2072 F9l Earnings in past 12 months
Sources of Income (Tape Locations 2073-2087)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
SOURCES OF INCOME
Whether R or member of family
received income in past 12 months
from:
2073 F92A Interest on checking or savings
account
2074 F92B Dividends, interest, property rental
2075 F92C Unemployment, Workmen's compensation
2076 F92D Social security or retirement
2077 F92E Aid to families with dependent
children
2078 F92F Aid to the blind, aid to the totally
disabled, or old age assistance
2079 F92G Food stamps
2080 F92H General assistance or other aid
2081 F92I Child support from a former husband
2082 F92J Contributions from other persons not
in the household
2083-2084 F93 Total family income during past 12
months
2085-2087 FTIME Time it took to administer interview
Self-Administered Questionnaire (Tape Locations 2088-2159)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
SELF-ADMINISTERED QUESTIONNAIRE
2088 BOX88 Whether self-administered
questionnaire was completed
2089 SAQ1 How easy to talk about experiences
2090-2091 SAQ2 Number of abortions in last 12 months
2092-2115 SAQ2JAN- Months(s) abortion(s) took place
SAQ2DEC
2116-2117 SAQ4 Number of abortions R has ever had
2118-2119 SAQ5 Age at first abortion
2120-2148 Blank
2149-2153 R7MO Date interview completed
2154-2156 Blank
2157 TELINT Whether interview conducted by
telephone
2158-2159 Blank
Respondent File Index - Recodes by Tape Location
Tape Locations 2160-2376
Imputation
Tape Flag Variable Variable
Location Location Number Description Name
2160 -- VAR915 Marital status RMARITAL
2161-2162 -- VAR905 Age at interview AGE
2163-2166 -- VAR904 Age as of March 15,1988 AGE315
2167 -- VAR906 Age in 5-year groups AGE5
2168 2730 VAR926 Geographic region of birth BRTHPLCE
2169-2170 2731 VAR930 Education (completed years EDUCAT
of schooling
2171 2732 VAR931 Completed high-sshool or DIPLGED
equivalent
2172-2173 2733 VAR932 Number of times left school DROPOUTN
2174-2177 2734 VAR933 Duration of first absence TIMEOUT
from school
2178-2179 2735 VAR934 Age last enrolled in school AGELSTED
2180-2181 2737 VAR936 Total number of years spent RELIGSCH
in a church-sponsored
school
2182 2750 VAR937 Number of years spent in RELIPRIM
a church-related primary
or junior-high school
2183 2751 VAR938 Number of years spent in RELIGHS
a church-related high
school
2184 2752 VAR939 Number of years spent in RELICOLL
a church-related college
or graduate school
2185 -- VAR945 Living arrangements at LIVING14
age 14
2186-2187 2740 VAR962 Mother's education EDUCMOM
2188-2189 2741 VAR963 Age of Mother at first AGEMOMB1
birth
2190-2191 2742 VAR964 Age at first menstrual MENARCHE
period
2192-2193 2657 VAR331 Number of completed COMPREG
pregnancies
2194-2195 2658 VAR332 Number of completed SPONPREG
pregnancies excluding
induced abortions
2196-2197 2659 VAR335 Number of completed preg- LOSSNUM
nancies ending in spon-
taneous pregnancy loss
2198-2199 -- VAR326 Number of pregnancies MISCARR
ending in miscarriage
2200-2201 -- VAR327 Number of pregnancies STLLBRTH
ending in stillbirth
2202-2203 2655 VAR328 Number of pregnancies end- ABORTION
ing in induced abortion
2204-2205 2656 VAR329 Number of pregnancies end- LBPREGS
ing in live birth
2206-2207 -- VAR330 Number of pregnancies PREGNUM
2208 -- VAR340 Pregnancies ending in C-SECNUM
delivery by C-section
2209-2213 2666 VAR410 Date of first live birth BABY1MO
2216-2218 2665 VAR406 Interval between first FMARBBY1
formal marriage and first
birth or date of interview
2219-2221 2667 VAR415 Interval beteeon first live BABY12
birth and second live
birth or interview date
2222-2224 2696 VAR603 Interval between first FMAR1CON
marriage and first con-
ception or interview date
2225-2227 2697 VAR604 Interval between first con- CON1FMAR
ception and first formal
marriage or interview date
2228-2231 2698 VAR605 Age at first conception AGECON1
2232-2236 2699 VAR606 Date of first conception DATE1CON
2237-2240 2700 VAR609 Age at first birth AGEBABY1
2241 -- VAR611 Outcome of first pregnancy PREGOUT1
2242-2246 2701 VAR612 Date first pregnancy ended PREG1MO
2249 2702 VAR613 Living arrangements of LIV1CHILD
first live birth
2252-2253 -- VAR630 Number of biological BIOKIDS
children under age 18
in household
2254-2255 -- VAR980 Total number of live births PARITY
2256 2576 VAR100 Has R ever had intercourse SEXEVER
2257-2259 2577 VAR110 Method used at first SEX1MTHD
intercourse, if any
2260-2262 2578 VAR12 Method used at last LASTBC
intercourse, if any
2263-2265 2579 VAR115 First method ever used METHOD1
2266-2270 2580 VAR118 Date R used first method DATEUSE1
for the first time
2271 2581 VAR120 Ever used pill PILL
2272 2582 VAR121 Ever used condcm CONDOM3
2273 2583 VAR22 Ever used condom without CONDOM4
foam
2274 2584 VAR123 Ever used condom and CONFOAM
foam together
2275 2585 VAR124 Ever used foam FOAM
2276 2586 VAR126 Ever used jelly or cream JELCREAM
alone
2277 2587 VAR128 Ever used suppository or SUPPOSIT
insert
2278 2588 VAR130 Ever used diaphragm with DIAPHRAM
or without jelly or cream
2279 2589 VAR132 Ever used douching after DOUCHE
intercourse
2280 2590 VAR134 Ever used IUD IUD
2281 2591 VAR136 Ever used female steriliza- FEMSTER
tion
2282 2592 VAR138 Ever used male sterilizationMALESTER
2283 2593 VAR140 Ever used natural family NFPTEMP
planning or temperature
rhythm
2284 2594 VAR142 Ever used calendar rhythm RHYTHM
2285 2595 VAR144 Ever used withdrawal WITHDRAW
2286 2596 VAR146 Ever used Today sponge SPONGE
2287 2597 VAR148 Ever used other method OTHER
2288 2598 VAR149 Ever used any nonsurgicai NONSURG
method
2289 2599 VAR150 Ever used any method ANYMTHD
2290-2293 2601 VAR158 Method calendar entry for METHCAL
the months of interview
2294-2295 2602 VAR160 Current contraqceptive CONSTAT
status 1988
2296 2669 VAR438 Wantedness of first birth WTBIRTH1
2297 2670 VAR439 Wantedness of last WTLASTP
pregnancy
2298 2671 VAR440 Wantedness of last live WTLASTB
birth
2299 2672 VAR44l Number of births in the BIRTHS5
last 5 years
2300 2673 VAR442 Number of wanted preg- WANTP5
nancies in the last
5 years
2302-2306 2685 VAR540 Century month of first DATESEX1
intercourse after first
menstrual period
2307-2308 2743 VAR965 Age at first intercourse SEX1AGE
after first menstrual
period
2309 2647 VAR304 Want or intend another birthWANTKID1
2310 2648 VAR305 Collapsed WANTKID WANTKID2
2311-2313 2649 VAR309 Number of months infertile NINFERT
2314 2650 VAR3l0 Infertility status INFERT
2316 2652 VAR320 Type of sterilization STRLOPER
operation
2322 2660 VAR360 Fecundity status FECUND
2324-2325 2662 VAR380 Nonintercourse in the last NOSEX12
12 months
2326-2327 2663 VAR382 Nonintercourse in the last NOSEX36
36 months
2328-2330 2664 VAR385 Duration of the current NOSEXDUR
period of nonintercourse
2331-2333 2668 VAR420 Central number of addi- ADDEXP
tional births expected
2334 2748 VAR985 Intentions for additional INTENT
births
2335 2604 VAR205 Services used at the first FP1MTHD
family planning visit:
got a new method
2336 2605 VAR2l0 Services used at the first FP10MED
family planning visit:
other medical
2337 2606 VAR2l5 Services used at the first FP1FPADV
family planning visit:
advice on birth control
2338 2607 VAR220 Services used at the first FP10ADV
family planning visit:
other advice
2339-2340 2608 VAR225 Age at first family FP1AGE
planning visit
2346 2610 VAR227 Timing of first visit and TIMVIS1
first intercourse
2347 2611 VAR228 Timing of first visit and TIMVIS2
first pregnancy
2348 2612 VAR230 First source of family FP1SRC
planning services
2349 2613 VAR240 Services used at the moot FPLSTMTH
recent family planning
visit: got a method
2350 2614 VAR242 Services used at the most FPLSTCON
recent family planning
visit: continued a method
2351 2615 VAR245 Services used at the most FPLSTMED
recent family planning
visit: other medical
2352 2616 VAR250 Services used at the most FPLSTADV
recent family planning
visit: advice on birth
control
2353 2617 VAR255 Services used at the most FPLSTOTH
recent family planning
visit: other advice
2354 2618 VAR260 Source of payment for the FPPAYSLF
most recent family
planning visit: self,
partner, family or
friends
2356 2619 VAR26l Source of payment for the FPPAYINS
most recent family
planning visit: insurance
2357-2358 2620 VAR262 Source of payment for the FPPAYMED
most recent family
planning visit: Medicaid
2359-2360 2621 VAR263 Source of payment for the FPPAYGOV
most recent family
planning visit: other
government
2361-2362 2622 VAR264 Source of payment for the FPPAYOTH
most recent family
planning visit: other
2363 2623 VAR266 Most recent source of RSOURCE
family planning services
2364-2365 2624 VAR270 Family planning visits in FPYRMD
the last 12 months:
private
2366-2367 2625 VAR272 Family planning visits in FPYRCLIN
the last 12 months:
clinics
2368-2369 2626 VAR274 Family planning visits in FPYRCOUN
the last 12 months:
counselors
2370-2371 2627 VAR276 Family planning visits in FPYRTOT
the last 12 months
2372 2628 VAR280 Pap smear in the last 12 PAPSMEAR
months
2373 2629 VAR28l Pelvic exam in past 12 PELVICEX
months
2374 2630 VAR282 Breast exam in past 12 BREASTEX
months
2375 2631 VAR283 Blood pressure test in BPRESSEX
past 12 months
2376 2632 VAR284 Urinalysis in past 12 URINALYS
months
Infertility Service (Tape Locations 2379-2411)
Imputation
Tape Flag Variable Variable
Location Location Number Description Name
Infertility service:
2379-2380 2635 VAR288 Drugs to make R ovulate OVULATE
2381-2382 2636 VAR289 Surgery or treatment on TUBES
blocked tubes
2383-2384 2637 VAR290 Infertility tests on INFERTR
respondent
2385-2386 2638 VAR291 Advice on how to time TIMESEX
intercourse
2387-2388 2639 VAR292 Advice to start or stop TIMEBC
contraception
2389-2390 2640 VAR293 Tests on husband/partner INFERTH
2391-2392 2641 VAR294 In vitro fertilization INVITRO
2393-2394 2642 VAR295 Artificial insemination INSEM
2395-2396 2643 VAR296 Bed rest BEDREST
2397-2398 2644 VAR297 Other INFERTOTH
2399-2400 2645 VAR298 Source of most recent INFSRC
infertility services
2401 2703 VAR705 Ever been treated for PID PIDTREAT
2404 2706 VAR7l4 Ever heard of genital herpesKNOWHERP
2407 2709 VAR720 Chances of getting genital GETHERP
herpes
2408 2710 VAR722 Ever heard of chlamydia KNOWCLMY
2410 2712 VAR726 Chances of getting GETCLMYD
chlamydia (again)
2411 2713 VAR728 Ever heard of AIDS or KNOWAIDS
AIDS virus
Activities From Which a Person Can Get AIDS (Tape Loc. 2412-2753
Imputation
Tape Flag Variable Variable
Location Location Number Description Name
Activities from which a person can get AIDS:
2412-2413 2714 VAR730 Shaking hands or hugging HUG
2414-2415 2715 VAR73l Sharing hypodermic needles HYPO
2416-2417 2716 VAR732 Sharing an apartment, APT
classroom, or office
2418-2419 2717 VAR733 Receiving a blood trans- TRANSF
fusion
2420-2421 2718 VAR734 Intercourse between men HOMO
2422-2423 2719 VAR735 Intercourse between a man HETERO
and a woman
2424-2425 2720 VAR736 Giving a blood donation DONATE
2426-2427 2721 VAR737 Being bitten by an insect BUGBITE
that has bitten someone
with the AIDS virus
2428-2429 2722 VAR738 Sharing personal items like DISHES
dishes, toilets, etc.
2430 2723 VAR740 Whether it is possible to VIRUS
get AIDS from someone who
has the AIDS virus but who
does not have the disease
2431 2724 VAR745 Chances of getting AIDS GETAIDS
2432 2725 VAR750 Contraceptives used to STDMETH
avoid STDs
2433 2726 VAR755 Contraceptives used to AIDSMETH
avoid AIDS
2434-2436 2675 VAR511 Interval between first SEX1FOR
intercourse (after first
menstrual period) and
first formal marriage (or
interview)
2437-2440 2676 VAR514 Age at first formal marriageFMAR1AGE
2441-2442 2677 VAR518 Number of formal marriages FMARNO
2443-2447 2679 VAR524 Date of dissolution of DISFIRST
first formal marriage
2448-2450 2680 VAR525 Interval between first MAR1DISS
formal marriage and dis-
solution of marriage (or
interview)
2451-2454 2681 VAR526 Age at dissolution of first AGEDISS
formal marriage
2455-2459 2682 VAR529 Date of second formal MAR2MO
marriage
2462-2464 2683 VAR530 Interval between divorce DIS1MAR
or death (first formal
marriage) and remarriage
(or interview)
2465-2468 2684 VAR535 Age at divorce or death: AGEDD1
1st formal marriage
2469-2473 2686 VRR550 Date of first cohabitation COHAB1
2474-2476 2687 VRR551 Length of first cohabita- COHABINT
tion interval
2477 2688 VAR552 Cohabitational status COHSTAT
2478 2689 VAR553 Outcome of first cohabita- COHOUT
tion
2479-2483 2690 VAR554 Date of first union UNION1
2484 2691 VAR555 Type and outcome of first UNTYPE
union
2485-2487 2692 VAR556 Duration of first union UNIONINT
2488 2728 VAR9l6 Formal marital status FMARITAL
2489 2729 VAR922 Hispanic origin HISPANIC
2490 2736 VAR935 Religious affiliation RELIGION
2491-2493 2738 VAR940 Poverty level income POVERTY
2494-2495 2739 VAR950 Labor force status LABORFOR
2496 -- VAR955 Place of residence (metro- METRO
politan-nonmetropolitan)
2497 -- VAR956 Urban-rural residence RURAL
2498 -- VAR956 Source of rural value RURALFLG
2499-2500 2746 VAR970 Years since first marriage MAR1NOW
2501-2505 2747 VAR976 Date of first formal FMAR1MO
marriage
2508 -- VAR9l1 Race RACE
2509-2510 -- -- Count the number of abor- COUNT08
tion records
2511-2514 2693 VAR557 Age at the beginning of COHAGEB
first cohabitation
2515-2518 2694 VAR558 Age at the end of first COHAGEE
cohabitation
2519-2522 2727 VAR907 Age at interview in 100ths AGE100
of year
2523-2526 2745 VAR967 Age at first intercourse SEX1HUND
(after first menstrual
period) in 100ths of year
2530 2656 VAR329 Currently Pregnant RCURPREG
253 1-2534 2674 VAR460 Age at most recent live NEWKID
birth
2535-2536 2600 VAR156 Ever used a method requir- MEDMTHD
ing medical intervention
2537 2695 VAR559 Ever cohabited COHEVER
2539 2646 VAR299 Ever had infertility INFEVER
services
2575 -- VAR925 Geographic region REGION
2753 VAR519 Intercourse in the last 3 SEXL3MO
months
Respondent File Index - Weights
2540-2546 W1 Trimmed weight, stage 1
2547-2553 W2 Trimmed adjusted weight
2554-2560 W3 Trimmed weight, stage 2
2561-2567 W4 Nonresponse adjusted weight
2568-2574 W5 Final weight, post-stratified
2754-3553 -- Replicate weights
Interval File Index - Questionnaire Items by Tape Location
Tape Locations 001-031
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
001-005 CaseID
006-007 Record Type
008-010 Blank
011-012 BP Record Pregnancy number
013-014 BP Record Pregnancy type
015 BP Record Number of live births
016 BP Record First outcome of this pregnancy
017 BP Record Second outcome of this pregnancy
018 BP Record Third outcome of this pregnancy
019 B11 Type of delivery (live birth)
020 Whether pregnancy conceived by artificial
insemination, in-vitro fertilization, or after a
sterilizing operation
021-025 B14 Century month of pregnancy outcome
026-027 Blank
028-029 B15 Number of weeks R had been pregnant when that
pregnancy ended
030 B16 DK probe: less than 3 months, 3-6 months, or more
than 6 months
031 BOX7 Pregnancy ended before or after January 1984
Pregnancies Ending January 1984 or Later (Tape Locations 032-079
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
PREGNANCIES ENDING JANUARY 1984 OR LATER
032 B17 Whether R had pregnancy test at doctor's office
or clinic
033-034 B18 Number of weeks Pat when R had pregnancy test
035-036 B19 Number of weeks after pregnancy test R went for
prenatal care
037 B20 Over visit doctor/clinic for prenatal care during
this pregnancy
038-039 B21 Number of months pregnant at first prenatal care
visit
040-041 B22 Number of prenatal care visits
042-043 B23 Source of most prenatal care visits
044-045 B24 Number of places R went for prenatal care
046-057 B25A-B25F Ways prenatal care bills were paid
058 B26 Whether caregiver made arrangements for R's
delivery at hospital or birthing center
059 B27 Whether caregiver asked if R had made arrange-
ments for baby's medical care after birth
060 B28 Whether doctor ever advised R to remain in bed
for one or more weeks because of some problem
related to this pregnancy
061-074 B29A-B296 Reason doctor advised R to remain in bed
075-076 B30 Number of days R remained in bed
077 BOX8 Pregnancy outcome
078 BP Record Whether this pregnancy ended in last live birth
079 BP Record Whether this pregnancy is last pregnancy
First Live Birth in Pregnancy (Tape Locations 080-120)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
First live birth in pregnancy
080 B12_1 Sex of child
081-082 B31_1 Weight in pounds
083-084 B31_1 Weight in ounces
085 B32_1 Weight more or less than 5 1/2 pounds
086 BOX10_1 Child born before or after January 1984
087-098 B33A 1- Way(s) in which medical bills for pregnancy paid
B33F_1
099 B34_1 Whether child went home from hospital at same
time as Respondent or stayed later for medical
reasons
100-101 B35_1 Number of night's child spent in hospital after
birth
102 B36_1 Whether child stayed in hospital where born, or
transferred to another hospital
103-104 B37_1 Number of times child stayed in hospital for at
least one night during first year
105-106 B38_1 Age of child at first well-baby or routine
checkup
107 BOX1l_1 Whether child listed in household enumeration
108 B39_1 Whether child is still live (if not listed in
household enumeration)
109 B40_1 Where is child living now
110-114 B41_1 Date of child's death
115 BOX12_1 Whether child died before two months old
116 B42_1 Whether child was breast fed
117-118 B43_1 Age of child in weeks when first took milk or
formula from bottle or cup
119-120 B44_1 Age of child in weeks when breast feeding stopped
Second Live Birth in Pregnancy (Tape Locations 121-161)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
Second live birth in pregnancy
121 B12_2 Sex of child
122-123 B31_2 Weight in pounds
124-125 B31_2 Weight in ounces
126 B32_2 Weight more or less than 5 1/2 pounds
127 BOX10_2 Child born before or after January 1984
128-139 B33A_2- Way(s) in which medical bills for pregnancy paid
B33F_2
140 B34_2 Whether child went home from hospital at same
time as Respondent or stayed later for medical
reasons
141-142 B35_2 Number of nights child spent in hospital after
birth
143 B36_2 Whether child stayed in hospital where born, or
transferred to another hospital
144-145 B37_2 Number of times child stayed in hospital for at
least one night during first year
146-147 B38_2 Age of child at first well-baby or routine
checkup
148 BOX11_2 Whether child listed in household enumeration
149 B39_2 Whether child is still living (if not listed in
household enumeration)
150 B40_2 Where is child living now
151-155 B41_2 Date of child's death
156 B12_2 Whether child died before two months old
157 B42_2 Whether child was breast fed
158-159 B43_2 Age of child in weeks when first took milk or
formula from bottle or cup
160-161 B44_2 Age of child in weeks when breast feeding stopped
Third Live Birth in Pregnancy (Tape Locations 162-202)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
Third live birth in pregnancy
162 B12_3 Sex of child
163-164 B31_3 Weight in pounds
165-166 B31_3 Weight in ounces
167 B32_3 Weight more or less than 5 1/2 pounds
168 BOX10_3 Child born before or after January 1984
169-180 B33A_3- Way(s) in which medical bills for pregnancy paid
B33F_3
181 B34_3 Whether child went home from hospital at same
time as Respondent or stayed later for medical
reasons
182-183 B35_3 Number of nights child spent in hospital after
birth
184 B36_3 Whether child stayed in hospital where born, or
transferred to another hospital
185-186 B37_3 Number of times child stayed in hospital for at
least one night during first year
187-188 B38_3 Age of child at first well-baby or routine
checkup
189 BOX11_3 Whether child listed in household enumeration
190 B39_3 Whether child is still living (if not listed in
household enumeration)
191 B40_3 Where is child living now
192-196 B41_3 Date of child's death
197 BOX12_3 Whether child died before two months old
198 B42_3 Whether child was breast fed
199-200 B43_3 Age of child in weeks when first took milk or
formula from bottle or cup
201-202 B44_3 Age of child in weeks when breast feeding stopped
Abortion (Tape Locations 203-204)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
ABORTION
203 B45 Type of facility in which pregnancy was ended
204 B46 Geographic location of facility
Periods of Non-Intercourse (Tape Locations 205-300)
TAPE QUESTION
LOCATION NUMBER DESCRIPTION
PERIODS OF NON-INTERCOURSE
205 C12A Whether R had any one-month or longer periods of
non-intercourse in this pregnancy interval
206-210 C13F1 Beginning date of first period of non-intercourse
211-215 C13T1 Ending date of first period of non-intercourse
216-220 C13F2 Beginning date of second period of non-inter-
course
221-225 C13T2 Ending date of second period of non-intercourse
226-230 C13F3 Beginning date of third period of non-intercourse
231-235 C13T3 Ending date of third period of non-intercourse
236 C14 Whether any method of birth control used (between
A & B)
237-239 C15M1 First method
240-244 C16M1 Century month method use began
245-249 C17M1 Century month method use ended
250-252 C15M2 Second method
253-257 C16M2 Century month method use began
258-262 C17M2 Century month method use ended
263-265 C15M3 Third method
266-270 C16M3 Century month method use began
271-275 C17M3 Century month method use ended
276-278 C15M4 Last method
279-283 C16M4 Century month method use began
284-288 C17M4 Century month method use ended
289-293 C18 Century month R became pregnant with (B)
294 C19 Whether R had stopped all method before she
became pregnant
295 C20 Whether R had stopped/was not using because she
wanted to become pregnant
296 C21 Did R want a(nother) baby at some time
297 022 DK probe: probability R wanted a(nother) baby at
some time
298 023 Timing of pregnancy for respondent
299 024 Whether partner wanted a(nother) baby at some
time
300 025 Timing of pregnancy for partner
Interval File Index - Recodes by Tape Location
Imputation
Tape Flag Variable Variable
Location Location Number Description Name
301-303 373 VAR34l Duration of pregnancy PRGLNGTH
in months
304-307 383 VAR991 Age at pregnancy outcome AGEPREG
308 370 VAR426 Wantedness of pregnancy-- WANTWIFE
respondent
309 380 VAR427 Wantedness of pregnancy-- WANTMAN
partner
310 -- VAR994 Pregnancy outcome OUTCOME
311-312 384 VAR992 Year pregnancy ended YRPREG
313 382 VAR62l Formal marital status at FMAROUT
pregnancy outcome
314 381 VAR6l4 Living arrangements of LIVBABY1
first or only baby
315 -- VAR6l5 Living arrangements of LIVBABY2
second baby
316 -- VAR6l6 Living arrangements of LIVBABY3
third baby
317 377 VAR375 Low birthweight of first LOW1
baby from this pregnancy
318 378 VAR376 Low birthweight of second LOW2
baby from this pregnancy
319 -- VAR377 Low birthweight of third LOW3
baby from this pregnancy
320-321 374 VAR372 Number of weeks pregnant PREGTEST
at pregnancy test
322-323 375 VAR373 Number of weeks pregnant PNCAREWK
at first prenatal care
324-325 376 VAR374 Number of visits for PNCARENO
prenatal care
326 -- VAR911 Race RACE
327 -- -- Pregnancy ended before or CEND84
after January 1984
328-329 -- -- Live birth number (first BIRTH071
or only live birth from
this pregnancy
330-331 -- -- Live birth number (second BIRTH072
live birth from this
pregnancy
332-333 -- -- Live birth number (third BIRTH073
live birth from this
pregnancy
334-335 -- -- Pregnancy number for this PREGNUM7
birth
Pregnancy number for this PREGNUM8
336-337 -- -- abortion
Interval File Index - Weights
338-344 W1 Trimmed weight, stage 1
345-351 W2 Trimmed adjusted weight
352-358 W3 Trimmed weight, stage 2
359-365 W4 Noresponse adjusted weight
366-372 W5 Final weight, post-stratified
2754-3553 -- Replicate weights
APPENDICES
Appendix 1
Specifications for Recodes
This apppendix contains the detailed specifications used to create
the recoded variables. Each specification describes how the
original data items were combined to create the recodes. The
original data items are usually referred to by the original
record/column location (e.g 2/17-18), rather than by their tape
location on the Public Use Tape. During data processing, the
data were keypunched on 33 records with a maximum of 120 columns
per record. The original record number appears in this Tape
Documentation in the upper right-hand corner of each page and the
original column number(s) appear in parent underneath the
tape location.
Unless otherwise specified, age variables are calculated as the
century month of the event minus the century month of birth,
divided by 12. Four column age variables have an implied demical
after the second column. If an analyst prefers to use age in
completed years, the first two columns of the variable should be
used. The four column age variable should be used for computing
mean ages. Two-column age variables refer to age in completed
years.
Sometimes a number of related variables (such as ever-use of
specific contraceptive methods) are created in exactly the same
way, so their specifications differ only in the tape location
from which the original data were taken. To avoid repetition,
the specifications for one variable in the group is included,
followed by a list of the other variables in the group.
Recode specifications appear in the same order the variables
appear on the Public Use Tape.
Respondent File Recode Specifications
VAR 915 "Marital Status" (RMARITAL)
VAR915 "Marital status" (RMARITAL)
No recode needed. (03/36)
Currently married = 1
Informally married = 2
Widowed = 3
Divorced = 4
Separated = 5
Never Married = 6
VAR905 "Age at Interview" (AGE)
VAR905 "Age at interview" (AGE)
No recode needed. AGe at interview = age at last birthday,
(03/47-48).
VAR904 "Age as of March 15, 1988" (AGE315)
VAR904 "Age as of march 15, 1988" (AGE315)
Calculate as the difference between century month for March 15,
1988 and date of birth (03/38-43) divided by 12 and keep 2
demical places.
VAR905 "Age in 5-Year Groups" (AGE5)
VAR905 "Age in 5-year groups" (AGE5)
Group values of AGE315 and code as follows:
AGE AGE5
15-19= 1
20-24= 2
25-29= 3
30-34= 4
35-39= 5
40-44= 6
VAR927 "Geographic Region of Birth" (BIRTHPLACE)
VAR926 "Geographic region of birth" (BIRTHPLACE)
If the respondent was born in Maine, New Hampshire, Vermont,
Massachusetts, Rhode Island, Connecticut, New York, New Jersey,
or Pennsylvania (03/44-46 coded 023,033,050,025,044,009,036,034,
042), then she was born in the Northeast, code 1.
If the respondent was born in Ohio, Indiana, Illinois, Michigan,
Wisconsin, Minnesota, Iowa, Missouri, North Dakota, South Dakota,
Nebraska, or Kansas (03/44-46 coded 039,018,017,026,055,027,019,
029,038,046,031,020), then she was born in the Midwest, code 2.
If the respondent was born in Delaware, Maryland, D.C., Virginia,
West Virginia, North Carolina, South Carolina, Georgia, Florida,
Kentucy, Tennessee, Iowa, Alabama, Mississippi, Arkansas, Louisiana
Oklahoma, or Texas (03/44-46 coded 010,024,011,051,054,037,045,
013,012,021,047,001,028,005,022,040,048), then she was born in
the South, code 3.
If the respondent was born in Montana, Idaho, Wyoming, Colorado,
New Mexico, Arizona, Utah, Nevada, Washington, Oregon,
California, Alaska, or Hawaii (03/44-46 coded 030,016,056,008,
035,004,049,032,053,04l,006,002,0l5), then she was born in the
West, code 4.
If the respondent was born in Puerto Rico, (03/44-46 coded 072),
then code 5.
If the respondent was born elsewhere outside of the 50 United
States (03/44-46 coded 060-995, excluding 072), then code 6.
VAR930 "Education (Completed Years of Schooling)" (EDUCAT)
VAR930 "Educaticn (completed years of schooling)" (EDUCAT)
If the respondent completed the highest grade she attended
(03/87 coded 1), then her education is the highest grade she
attended (03/85-86).
If the respondent did not complete the highest grade she
attended (03/87 coded 2), her education is the grade below the
highest grade she attended 03/85-86 minus 1).
If the respondent had no formal schooling (03/85-86 coded 00),
then she completed no years of schooling, code 00.
If the respondent reported the highest grade she attended
(03/85-86 coded 1 to 18), but did not report whether or not she
had completed that grade (03/87 coded 7,8, or 9), then her
education is the highest grade she attended (03/85-86).
VAR931 "Completed High-School or Equivalent" (DIPLGED)
VAR931 "Completed high-school or equivalent" (DIPLGED)
If the respondent has a regular high school diploma, (03/102)
coded 1), code = 1.
If the respondent has a high school equivalency certificate, or
GED (03/102 coded 2 or 03/102 coded 1), code = 2.
If the respondent has earned neither a regular high school diploma
nor a GED (03/102 coded inapplicable and 03/103 coded 2),
code = 3.
If 03/102 coded 7,8, or 9, or if 03/103 coded 7,9, code DIPLGED =
9 and impute.
VAR932 "Number of Times Left School" (DROPOUTN)
VAR932 "Number of times left school" (DROPOUTN)
If the respondent had no formal schooling (03/85-86 coded 00), or
if she was 25 or older as of March 15, 1988 (03/24 coded 2), or
if 03/88 = BLANK, DROPOUTN should be coded BLANK.
If the respondent ever discontinued schooling (03/88 coded 1),
then the number of times she left school = 03/89-90. If 03/88
coded 2, then code the number of times she left school 00.
VAR933 "Duration of First Absence From School" (TIMEOUT)
VAR933 "Duration of first absence from school" (TIMEOUT)
If the respondent never discontinued school (03/88 is coded 2) or
if 03/88 is coded BLANK, this variable will not apply to her and
should be coded as BLANK. If 03/88 is coded 1, then calculate the
amount of time she spent out of school as follows: 03/97-100
minus 03/91-94.
VAR934 "Age Last Enrolled in School" (AGELASTED)
VAR934 "Age last enrolled in school" (AGELASTED)
If 04/18-21 coded 9696, code this variable=03/47-48.
If 04/18-21 coded blank, this means not applicable, code AGELISTED
= blank.
If 04/18-21 coded, 9797, 9898, or 9999, and 04/2lb = 2,7,8, or 9,
and 04/22-23 not coded 97,98,99, then AGELISTED = 04/22-23.
If 04/18-21 coded 9797, 9898, or 9999, and 04/2lb = 1, and 04/22-
23 not coded 97,98,99, then AGELISTED = 04/22-23 minus 1.
If 04/18-21 coded 9797, 9898, or 9999, and 04/22-23 coded 97,98,
or 99, then code AGELISTED = 99 and impute.
Otherwise calculate this variable as follows: century month last
enrolled (04/18-21) minus century month of birth (03/38-43).
Divide by 12 and truncate to an integer.
VAR936 "Total # Yrs Spent in Church-Sponsored School" (RELIGSCH)
VAR936 "Total nurber of years spent in a church-sponsored
school" (RELIGSCH)
Calculate this and the following variables using the following
base.
If 04/26-27=01, Church1=1
If 04/28-29=02, Church2=1
If 04/30-31=03, Church3=1
If 04/32-33=04, Church4=1
If 04/34-35=05, Church5=1
If 04/36-37=06, Church6=1
If 04/38-39=07, Church7=1
If 04/40-41=08, Church8=1
If 04/42-43=09, Church9=1
If 04/44-45=10, Church10=1
If 04/46-47=11, Church11=1
If 04/48-49=12, Church12=1
If 04/50-51=13, Church13=1
If 04/52-53=14, Church14=1
If 04/54-55=15, Church15=1
If 04/56-57=16, Church16=1
If 04/58-59=17, Church17=1
If 04/60-61=18, Church18=1
Church1 + church2 + church3 + ... church18
VAR937 "Yrs Spent in Church-Rel Prim/Jr. High School" (RELIPRIM)
VAR937 "Number of years spent in a church-related primary or
junior-high school" (RELIPRIM)
Using the above formulation RELIPRIM = church1 + church2 + ...
church8.
VAR938 "# Years Spent in Church-Related High School" (RELIGHS)
VAR938 "Number of years spent in a church-related high school"
(RELIGHS)
Using the above formulation RELIGHS = church9 + church10 +
church11 + church12.
VAR939 "Yrs Spent in Church-Rel College/Grad School" (RELICOLL)
VAR939 "Number of years spent in a church-related college or
graduate school" (RELICOLL)
Using the above formulation RELICOLL - church13 + church14 +
church15 + church16 + church17 + church18.
VAR945 "Living Arrangements at Age 14" (LIVING 14)
VAR945 "Living arrangements at age 14" (LIVING 14)
No recode needed. 04/63.
VAR962 "Mother's Education" (EDUCMOM)
VAR962 "Mother's education" (EDUCMOM)
The educational attainment of the respondent/s mother is in
04/68-69, codes 00-18.
VAR963 "Age of Mother at First Birth" (AGEMOMB1)
VAR963 "Age of mother at first birth" (AGEMOMB1)
If 04/71-72 is 09-45, code=age in years from 9 to 45.
If 04/71-72 is 97-99, and 04/73 is 1, code=50: "not sure, but
probably under age 20."
If 04/71-72 is 97-99, and 04/73 is 2, code=51: "not sure, but
probably age 20 or older."
If 04/71-72 is 97-99 and 04/73 is 7-9, code AGEMOMB1 = 99 and
impute.
VAR964 "Age at First Menstrual Period" (MENARCHE)
VAR964 "Age at first menstrual period" (MENARCHE)
If 04/76 = 1, and 04/74-75 = 08-20, MENARCHE = 04/74-75 minus 1.
If 04/76 = 2, 7, 8, or 9, and 04/74-75 = 08-20, MENARCHE = 04/74-
75.
If 04/74-75 = 96, MENARCHE = 96.
If 04/74-75 = 97-99, code MENARCHE = 99 and impute.
VAR331 "Number of Completed Pregnancies" (COMPREG)
VAR331 "Number of completed pregnancies" (COMPREG)
This is the total number of completed pregnancies the respondent
has had at the time of the interview (04/89-90). No recode
needed.
VAR332 "# Comp Preg Excluding Induced Abortions" (SPONPREG)
VAR332 "Number of completed pregnancies excluding induced
abortions" (SPONPREG)
SPONPREG is the total nunber of completed pregnancies a woman has
had that ended in anything other than abortion - i.e., (04/89-
90) minus the number of pregnancies that ended in abortion
(04/85-86).
VAR335 "# Comp Preg Ending in Spontaneous Preg Loss" (LOSSNUM)
VAR335 "No. of completed pregnancies ending in spontaneous
pregnancy loss" (LOSSNUM)
This is the number of pregnancies a woman has had that ended in 1
or more spontaneous pregnancy losses regardless of any other
outcomes of those pregnancies. (04/89-90, minus (06/16-17 coded
01) minus (06/16-17 coded 02) minus (06/16-17 coded 05 (if 06/19
ne 3 or ne 4, and 06/20 ne 3 or ne 4)) minus (06/16-17 coded 07
(if 06/19 ne 3 or ne 4, and 06/20 ne 3 or ne 4 and 06/21 ne 3 or
ne 4)).
VAR326 "Number of Pregnancies Ending in Miscarriage" (MISCARR)
VAR326 "Number of pregnancies ending in miscarriage" (MISCARR)
No recode needed. THis is the total number of pregnancies that
respondent ever had that ended in a miscarriage (04/81-82 coded
00-30).
VAR327 "Number of Pregnancies Ending in Stillbirth" (STILLBRTH)
VAR327 "Number of pregnancies ending in stillbirth" (STILLBRTH)
No recode needed. This is the total number of pregnancies that
respondent ever had that ended in a stillbirth (04/83-84 coded 00-
03).
VAR328 "Number of Pregnancies Ending in Abortion" (ABORTION)
VAR328 "Number of pregnancies ending in abortion" (ABORTION)
No recode needed. This is the total number of pregnancies that
respondent ever had that ended in an abortion (04/85-86 coded 00-
03).
VAR329 "Number of Pregnancies Ending in Live Birth" (LBPREGS)
VAR329 "Number of pregnancies ending in live birth" (LBPREGS)
No recode needed. This is the total number of pregnancies that
respondent ever had that ended in a live birth (04/87-88 coded 00-
30).
VAR330 "Number of Pregnancies" (PREGNUM)
VAR330 "Number of pregnancies" (PREGNUM)
No recode needed. This is the total number of pregnancies that
respondent ever had (05/85-86 coded 00-30).
VAR 340 "Pregnancies Ending in Delivery by C-Section" (C-SECNUM)
VAR340 "Pregnancies ending in delivery by C-section" (C-SECNUM)
This is the count of the number of live birhts be Cesarean Section
each respondent has had (06/22 coded 4). It is applicable for
every respondent, ie, respondents with no live birhts will have a
value of zero.
VAR410 "Date of First Live Birth" (BABY1MO)
VAR410 "Date of first live birth" (BABY1MO)
If the respondent has not had a live birth (o4/87-88 coded 00),
then there is no date of forst live birth, so BABY1MO=BLANK.
If the respondent has had one or more live births (04/87-88 coded
01-20), then the date of first live birth is the date (06/23-28)
for the first pregnancy that ended on a live birth (i.e., birth #
01:07/13-14).
VAR406 "Int Btwn 1st Formal Marriage & 1st Birth/Date Interview"
VAR406 "Interval between first formal marriage and first birth
or date of interview" (FMARBBY1)
Note: In variables 406, 603, 604, and 621, compare dates using
the month, year, and day of first birth or pregnancy and first
marriage.
If the respondent has not had a live birth (04/87-88 coded zero),
and has not been formally married (FMARITAL=6), FMARBABY1 is
coded BLANK.
If the respondent has been formally married, but has not had a
live birth (04/87-88 coded 00), this interval = the date of
interview (03/25-30) minus the date of the respondent's first
formal marriage (VAR976).
If the respondent has had a live birth (04/87-88 coded 01-20) and
has been formally married (VAR976, FMAR1MO ne blank), and the
date of the first live birth (BABY1MO, recode 410), and the first
formal marriage (VAR976) are known, then:
if the date (century month) of first live birth is equal to
or later than the date of first marriage (BABY1MO GE
FMAR1MO), FMARBABY1 is the number of completed months in the
interval between BABY1MO and FMAR1MO:
If the interval from
FMAR1MO to BABY1MO is: then FMARBABY1 is:
000 months 000
001 months 001
002 months 002
... ...
360 months 360
If the data of +irst live birth is earlier than the date of first
formal marriage (BABY1MO LT FMAR1MO), then the first birth
occurred before the first formal marriage, so FMARBABY1=888.
If FMAR1MO or BABY1MO=9999, then code FMARBABY1 = 999 and impute.
If the respondent has had a live birth and has never been
formally married (VAR976 coded blank), the birth occurred before
marriage, so FMARBABY = 888.
VAR415 "Int Btwn 1st Live Birth & 2nd Live Birth/Interview Date"
VAR415 "Interval between first live birth and second live birth or
interview date" (BABY12)
If the respondent has never had a live birth (o4/87-88 coded 00),
then there is no interval from first ot second live birth, so
BABY12=BLANK.
If the respondent had at least two pregnancies ending in live birth
(04/87-88 coded 02-20), then the interval between the first and
second live birth is the century month of the second pregnancy
ending in live birth (BABY2MO, defined similarly as BABY1MO) minus
the century month of the first pregnancy ending in live birth
(BABY1MO, see recode 410).
If the respondent has had only one pregnancy ending in live birth
(04/87-88 coded 01), then the interval is the century month of
interview (03/25-30) minus the century month of the first pregnancy
ending in live birth (BABY1MO).
Codes: 00,01,02,03....360 = Actual number of monthsVAR603 "Interval in
months between first marriage and first conception or interview date"
(FMAR1CON)
If R has never heen pregnant (05/85-86 coded 0), and has never
been formally married (VAR976 eq blank), then FMAR1CON is coded
BLANK.
If R has had one or more pregnancies (05/85-86 coded 01 to 25),
and is never formally married (VAR976 eq blank), then FMAR1CON=996.
If R has had 1 or nore pregnancies (05/85-86 coded 01 to 25), and
is ever formally married (VAR976 ne blank), then calculate
FMAR1CON as the date of conception of first pregnancy (which must
be calculated as described below), minus the date of first formal
narriage (VAR976). To calculate the date of first conception,
use interval file data for the first pregnancy (06/13-l4 = 01):
If there is a date of conception in 10/89-92 (i.e. the date of
conception is not missing or estimated), use it. If not:
date of conception=date pregnancy ended (06/23-28) minus
duration of pregnancy in months (PRGLNGHT).
If the interval is a negative number, the first conception
occurred before marriage and FMAR1CON is coded 995.
If the respondent is ever-married (VAR76 ne blank), but has
never haen pregnant (05/85-86 eq 00), then FMAR1CON eq the
interview date (03/25-30) minus the date of her first marriage
(VAR976).
Code categories:
BLANK = never pregnant and never formally married.
000-360 = months between 1st formal marriage and 1st
conception or interview date.
995 = 1st conception occurred before formal marriage.
996 = has had first conception, but has never been formally
married.
999 = missing, impute.
4VAR604 "Int Btwn 1st Conception & First Marriage/Interview Date"
VAR604 "Interval between first conception and first formal
marriage or interview date (CON1FMAR)
If the respondent has never been pregnant (05/85-86=00), and has
never been married (VAR76 eq blank), then CON1FMAR is coded BLANK.
If the respondent has had 1 or more pregnancies (05/85-86 01 to
25), and is ever formally married (VAR976 ne blank), then
calculate CON1FMAR as the date of first marriage (FMAR1MO,
VAR76) minus the date of first conception, which is calculated
as VAR603, FMAR1CON.
If the interval is a zero of a negative number, the first
conception occurred after of in the same month as first formal
marriage, and CON1FMAR is coded 995.
If the respondent has had one or more pregnancies (05/85-06=01 to
25) , and is never formally married (VAR976 eq blank), then
CON1FMAR = date of interview (03/25-30) minis date of first
conception.
If the respondent has ever been married (VAR976 ne blank), but
has never been pregnant (05/85-86=00), code=996.
Code categories:
BLANK = never pregnant and never formally married.
000 to 360 = months between 1st conception and 1st marriage
or interview (000 is valid for never formally
married only)
995 = 1st conception after or in same month as 1st
marriage (995 valid for ever formally married
only)
996 = has been married, but has not been pregnant.
999 = missing, impute.
VAR605 "Age at First Conception" (AGECON1)
VAR605 "Age at first conception" (AGECON1)
If R has never been pregnant (05/85-86=00), then AGECON1 is coded
BLANK.
If R has ever been pregnant (05/85-86 = 01 to 25), then calculate
AGECON1 as the difference between date of first conception
(calculated as in VAR603, FMAR1CON) and the date of birth (03/38-
43) divided by 12. Keep 2 demical places.
Code categories:
BLANK = never been pregnant
1000-4499 = age at first conception
9999 = missing, impute.
VAR606 "Date of First Conception" (DATE1CON)
VAR606 "Date of first conception" (DATE1CON)
NOTE: Assign first digit=9 if date was estinated.
If R has never been pregnant (05/85-86 eq 0), DATE1CON is
blank.
If R has ever been pregnant (05/85-86 eg 1-25), DATE1CON is
the date of first conception in 10/89-92 (C-18) if c-18 is
reported (not blank or missing). If 10/89-92 is blank or
missing, then DATE1CON = date pregnancy ended (06/23-28) minus
duration of pregnancy in months (PRLNGTH). If C-18 and B-14 or
B-15 are missing, code DATE1CON = 9999 and impute.
VAR609 "Age at First Birth" (AGEBABY1)
VAR609 "Age at first birth" (AGEBABY1)
If R has never had a live birth (04/87-88=0) then AGEBABY1 is
coded BLANK.
If R has ever had a live birth (04/87-88 = 1-20), then calculate
AGEBABY1 as the difference between the century month of first
birth (BABY1MO,, VAR410) and the century month of respondent's
birth (03/38-43), divided by 12. Keep two demical places.
Code categories:
BLANK = never had a live birth
1000-4499 = age at first live birth
9999 = missing, impute.
VAR611 "Outcome of First Pregnancy" (PREGOUT1)
VAR611 "Outcome of first pregnancy" (PREGOUT1)
If R has never been pregnant (05/85-86 = 00), then PREGOUT1 =
BLANK.
If R has ever been pregnant (05/85-86 = 01 to 25), then PREGOUT1
is computed using the outcome of the first pregnancy (06/13-
14=01), as indicated in 06/16-17 and 06/19, and following the
same prosedure used for VAR94 (OUTCOME).
VAR612 "Date First Pregnancy Ended" (PREG1MO)
VAR612 "Date first pregnancy ended" (PREG1MO)
If R has never Had a completed pregnancy (04/89-90=00), then
PREG1MO is coded BLANK.
If R has ever had a completed pregnancy (04/89-90 = 01-25), then
PREG1MO is the century month given in 06/23-28 of the
respondent's first interval file record (06/13-14=01).
VAR613 "Living Arrangements of First Live Birth" (LIV1CHILD)
VAR613 "Living arrangements of first live birth" (LIV1CHILD)
If R has never had a live birth (04/87-88=00), code BLANK.
If R has ever had a live birth (04/87-88 =01-20), code LIV1CHILD
as follows, from 07/37, 45-47 on first interval record that
includes a live birth (06/16-17=01,05 or 07). If more than one
live birth in pregnancy, use tape locations for first child.
If the child is no longer living (07/37=5 or 07/46=2), code 1.
If the child is still living with mother (07/45=1) and the mother
is never formally married (VAR976 eq blank), code 2.
If the child is still living with mother (07,/45=1) and the mother
is ever formally married (VAR976 ne blank), code 3.
If the child is living with father or other relatives
(07/47=03,04), code 4.
If the child is living with adoptive parents (07/37=03) or
(07/47=05), code 5.
If the child has other living arrangementsits (07/47=01,02,06),
code 6.
If 07/45,46, or 47 is missing code 9 and impute.
VAR630 "# Biological Children Under Age 18 in Houshld" (BI0KIDS)
VAR630 "Number of biological children under age 18 in household"
(BI0KIDS)
Count the number of live births still living in the mother's
household and under 18 years o+ age at interview. (Interval file
07/45 equals 1 and date of interview (R file 03/25-30) minus date
of child's birth (interval file 06/23-26) divided by 12 is less
than 18.0). Include in count second and third live births from
pregnancy.
VAR980 "Total Number of Live Births" (PARITY)
VAR980 "Total number of live births" (PARITY)
This is the total number of live births the respondent has ever
had. No recode is needed. Take information directly from
COUNT07 (05/87-88).
VAR100 "Has R Ever had Intercourse" (SEXEVER)
VAR100 "Has R ever had intercourse" (SEXEVER)
If 17/56 is coded 1, then R has had intercourse, so SEXEVER=1.
If 17/56 is coded 2, then R has never had intercourse, or has
never had intercourse since first menstrual period, so SEXEVER=2.
VAR110 "Method Used at First Intercourse, If Any" (SEX1MTHD)
VAR110 "Method used at first intercourse, if any" (SEX1MTHD)
If the respondent has never had intercourse (17/56 coded 2), then
SEX1MTHD=BLANK.
If the timing of first use is unknown (12/57=7,8, or 9) then code
SEX1MTHD=999 and impute.
If R has never used a method (11/129 coded 2), (SEX1MTHD)=995.
If the respondent did not use a method at first intercourse
(12/57=2-6), then SEX1MTDH=996.
If the respondent used a method at first intercourse (12/57 coded
1 then the only mehtod ever used (see 12/74-89 or 12/18-49) is
the method used at first intercourse. (There should be a method
reported in either 12/18-49 OR 12/74-89, but not necessarily in
both -- for example, if R has had sex only once.)
If the respondent used a method at first intercourse (12/57 coded
1) and had ever used more than 1 method (12/50 coded 2), then the
first method she ever used (12/52-54) was the method she used at
her first intercourse.
Convert combination methods to single method codes as follows:
SEX1MTHD
Code Method Source codes
001 Pill = 008, 046-058, 846-858
002 Condom = 001, 092-100 892-900
003 Condom and Foam together = 002, 082-091, 882-891
004 Foam = 005, 109-115, 909-915
005 Jelly or cream = 007, 116-121, 916-921
006 Suppository or insert = 012, 122-126, 922-926
007 Diaphragm = 003, 071-081, 871-881
008 Douche = 004, 136, 936
009 IUD = 006, 059-070, 859-870
010 Female sterilization = 011, 017-031, 817-831
011 Male sterilization = 014, 032-045, 832-845
012 Temperature rhythm (NFP) = 010, 127-130, 927-930
013 Calendar rhythm = 009, 131-133, 931-933
014 Wothdrawal = 015, 134-135, 934-935
015 Today Sponge = 013, 101-108, 901-908
016 Other methods = 016
995 Never used a method (11/129 coded 2)
996 Did not use a method at 1st intercourse
999 Refused, Don't Know, or Not Ascertained; impute
NOTE: TO MALE VALID COMPARISONS WITH CYCLE 3 DATA, CATEGORIES
002 AND 003 SHOULD BE COMBINED.
VAR112 "Method Used at Last Intercourse, If Any" (LASTBC)
VAR112 "Method Used at Last Intercourse, if any" (LASTBC)
If R has never had intercourse since first period (17/56 coded
2), then LASTBC-BLANK.
If R has never used a method (11/129 coded 2), then LASTBC=995.
If R did not use a method at last intercourse (12/65 coded 2),
then LASTBC=996.
If 12/64=3 (no intercourse after first time), then the code for
LASTBC = code for SEX1MTHD.
If R did use a method at last intercourse (12/64 coded 1 or12/65
coded 1), then:
if R's method was female sterilization (12/64 coded 1) then
LASTBC=010.
if R's method was reported in C-45 (12/66-68), use the code
in 12/66-68. Convert combination codes to single method
codes in the same way as shown in VAR110.
VAR115 "First Method Ever Used" (METHOD1)
VAR115 "First method ever used" (METHOD1)
If R has never used a method(11/129 coded 2), or never had
intercourse since first period (17/56=2), then mathod1 is
inapplicable, or BLANK.
If R has used 2 or more methods(12/50 coded 2), then her first
method ever used is the method in C-41 (12/52-54).
If R has used only 1 method (12/50 coded 1), then the only method
ever used is the first method ever used (either in 12/18-49 or in
12/74-89; OR take the only code "1" in VAR120 to VAR148).
Convert combination methods to single method codes as in VAR110
(SEX1MTHD).
VAR118 "Month & Yr R Used 1st Method for 1st Time" (DATEUSE1)
VAR118 "Month and Year R used first method for the first time"
(DATEUSE1)
NOTE: This will be a 5-column field. The first column is "9" if
the month is estimated from 12/57, the age, or age range, and
zero otherwise. Convert seasons to months.
If R has never had intercourse since first period (17/56 coded
2), or has never used a method (11/129 coded 2), then
DATEUSE1=blank.
If R has used a method, and if she used her first method at her
first intercourse (12/57=1), then use the date in DATEUSE1 =
DATEUSE1 (VAR540).
If used her first mehtod within a month of her first
intercourse (12/57=2), use the data 12/58-61; if no date is
given in 12/58-61, use the date in DATESEX1.
If she used her first method one or more months after first
intercourse (12/57=3-6), and her month and year of first use are
not missing (12/58-61 NE 9797, 9898, or 9999), then use the date
in 12/58-61.
If R did not report a month and year in 12/58-61, but did report
an interval after first intercourse, (12/57=3-6), then:
DATESEX1 (VAR540) plus the midpoint of the interval
is the estimated date of first use.
The midpoints of the intervals are estimated by:
1-3 months after intercourse = 2 months
4-6 months after intercourse = 5 months
7-12 months after intercourse = 10 months
More than 12 months after intercourse = 18 months
If R has used a method (11/129=1 or 11/127=2), and she gave a
time interval after first intercourse when she used her first
method (12,57=2-6) but the month and year of first method use is
before the date of first intercourse (DATEUSE1 Less than
DATESEX1), then DATEUSE1 is estimated using the midpoint of the
time interval in 12/57.
If R has used a method (ANTMTHD=1) and C-43=3-6 (TL541), but the
month and year of first method use is before or the same as the
date of first intercourse (DATEUSE1 LE DATESEX1), then change
DATEUSE1 to DATESEX1 plus the midpoint of the interval reported
in C-43, TL541 (For example, if C-43=3, then DATEUSET1 =
DATESEX1 + 2 months, if C-43=4, then DATEUSE1= DATESEX1 + 5
months, etc.)
If data are missing, code DATEUSE1 = 9999 and impute.
VAR120 "Ever Used Pill" (PILL)
VAR120 "Ever used pill" (PILL)
If the respondent has never had intercourse or never had
intercourse since first period (17/56=2), then ever-use is
inapplicable, so PILL=blank.
If the respondent has ever used the pill for a month or
more(12/81 coded 1) or at all(12/32-33=08) or if it was her first
method ever (12/52-54=008, or 046-058, or 846-858) she has ever
used the pill, so PILL=1.
If the respondent has never used the pill(12/81 coded 2 AND
12/32-33 coded 00 or blank AND 12/52-54 NOT coded 008 or 046-058
or 846-858) then PILL=2.
If R never had intercourse after the first time (12/64 coded 3),
or either never used a method (11/129 coded 2), or did not use
the pill (12/32-33 coded blank or 00), then PILL = 2.
NOTE: In Variables 120-148 (PILL to OTHER), if use for a
month or more (12/74-89), use at all (12/18-49), and
first use (12/52-54) are all missing (refused, DK, or
not ascertained) or one or more are missing and none
indicate ever-use, then code PILL = 9 and impute.
VAR121 "Ever Used Condom" (CONDOM3)
VAR121 "Ever used condom" (CONDOM3)
If the respondent has never had intercourse or never had
intercourse since first period, (17/56=2), then ever-use is
inapplicable, so CONDOM3=blank.
If R has used the condom alone for a month or more (12/74=1), or
at all (12/18-19=01), or the condom and foam (12/75=1 or
12/20-21=02), or if either condom alone or condom and foam was
her first method ever (12/52-54=001, 002, 082-1OO, 882-900),then
she has ever used the condom, so CONDOM3=1.
If the R has never used the condom (12/74=2 AND 12/18-19=00 or
blank AND 12/75=2 AND 12/20-21=00 AND 12/52-54 NE 001, 002,
082-100, or 882-900) then CONDOM3=2.
If R never had intercourse after the first time (12/64 coded 3)
or never used a method (11/129 coded 2), or did not use condom
(12/18-19=00 or blank and 12/20-21=00 or blank, then CONDOM3=2.
NOTE: "CONDOM 3" IS COMPARABLE TO "CONDOM" IN CYCLE 3, AND
SHOUlD BE USED FOR COMPARISONS OVER TIME. "CONDOM 4"
(VAR122) EXCLUDES USE OF "CONDOM AND FOAM TOGETHER."
VAR122 "Ever Used Condom Without Foam" (CONDOM4)
VAR122 "Ever used condom without foam" (CONDOM4)
If the respondent has never had intercourse or never had
intercourse since first period, (17/56=2), then ever-use is
inapplicable, so CONDCOM4=blank.
If R has used the condom (without foam) for a month or more
(12/74=1), or at all (12/18-19=01), or if condom alone was her
first method ever (12/52-54=001, 092-100, 892-900), then she has
ever used the condom, so CONDOM4=1.
If the R has never used the condom (12/74=2 AND 12/18-19=00 or
blank AND 12/52-54 NE 001, 092-100, or 892-900) then CONDOM4=2.
If R never had intercourse after the first time (12/64 coded 3)
or never used a method (11/129 coded 2), or did not use condom
(12/18-19=00 or blank), then CONDOM4=2.
VAR123 "Ever Used Condom and Foam Together" (CONFOAM)
VAR123 "Ever used condom and foam together" (CONFOAM)
If R has never had intercourse or never had intercourse since
first period (17/56=2), then ever-use is inapplicable, so CONFOAM
= blank.
If R has used condom and foam together (12/75=1 or 12/20-21=02),
or if condom and foam was her first method ever (12/52-54=002,
082-091, 882-891), then she has ever used condom and foam
together, so CONFOAM=1.
If R has never used the condom and foam together (12/20-21=00 or
blank AND 12/52-54 NE 002 AND 12/75=2 AND 12/52-54 NE 082-091 AND
12/52-54 NE 882-891), then CONFOAM=2.
If R never had intercourse after the first time (12/64 coded 3)
or never used a method (11/129 coded 2), or did not use condom
and foam together (12/20-21= 00 or blank), then CONFCAM=2.
NOTE: Variables 124 through 148, ever-use of foam through ever-
use of "other," are created the same way.
VAR149 "Ever Used Any Nonsurgical Method" (NONSURG)
VAR149 "Ever used any nonsurgical method" (NONSURG)
If the respondent has never had intercourse or never had
intercoorse since first period (17/56 coded 2), then ever-use is
inapplicable, so NONSURG=blank.
If the respondent has ever used any method other than FEMSTER or
MALESTER (PILL or CONDOM or ...OTHER coded 1), then NONSURG=1.
If the respondent has never used any method other than
sterilization (PILL AND CONDOM AND ....OTHER all coded 2), then
NOSURG=2.
VAR150 "Ever Used Any Method" (ANYMTHD)
VAR150 "Ever used any method" (ANYMTHD)
If the respondent has never had intercourse or never had
intercourse since first period (17/56 coded 2), then ever-use is
inapplicable, so ANYMTHD=blank.
If the respondent has ever used any method including FEMSTER or
MALESTER (PILL or CONDOM or ...OTHER coded 1), then ANYMTHD=1.
If the respondent has never used a method (PILL AND CONDOM AND
..OTHER coded 2), then ANYMTHD=2.
VAR158 "Method Calendar Entry for Month of Interview" (METHCAL)
VAR158 "Method Calendar entry for the month of interview"
(METHCAL)
This is the method calendar entry for the month of interview.
Find the month of interview in 14/122-125 or 28/47-52 (it will
be Jannary 1988 August 1988); go to the method calendar for that
month, and print the code in METHCAL.
The entry is blank if R has never had intercourse or never had
intercourse since first nenstrual period, or only had intercourse
once (09/103=2 Or 09117-120=9595 or 11/18-21=9595 or 12/70=4;
i.e., C-5=2 or C-9=9595 or C-26=9595 or BOX33=4).
VAR160 "Current Contraceptive Status 1988" (CONSTAT)
VAR160 "Current contraceptive status 1988" (CONSTAT)
Using Contraception
01 Sterilization--female
02 Sterilization--Male
03 Pill
04 IUD
05 Diaphragm with or without Jelly or cream
06 Condom and foam
07 Condom without foam
08 Foam
09 Periodic abstinence: calendar rhythm
10 Withdrawal
11 Douche
12 Periodic abstinence: Natural family planning,
temperature rhythm
13 Today Sponge
14 Suppository or insert
15 Jelly or Cream alone
16 Other--method known
17 Other--Method unknown
Not using contraception
20 Pregnant
21 Seeking Pregnancy
22 Postpartum
23 Sterile--noncontraceptive--female--nonsurgical
24 Sterile--noncontraceptive--male--nonsurgical
25 Sterile--noncontraceptive--female--surgical
26 Sterile--noncontraceptive--male--surgical
29 Sterile--unknown reasons
30 Other nonuser: never had intercourse, or never had
intercourse since first period
31 Other nonuser: has had intercourse not in last 3 months
32 Other nonuser: had intercourse in last 3 months
33 Other nonuser: had intercourse only once
99 User status not ascertained
NOTE: "Periodic abstinence"= codes 9 PLUS 12;
(calendar rhythm plus natural family planning);
"Other"=codes 13,14,15,16,17
Recode procedure: Cases will be coded into the above categories
using the following priority rules:
If R is pregnant (05/91=1), then CONSTAT = 20.
If R or husband partner has had a sterilizing operation
(15/19=1), and:
If there is one sterilizing operation coded in D-2 and that
operation is:
Noncontraceptive female surgical (D-6=08 only; or first
mention in D-5=80-89 or 96 and D-6=96; or D-6=08 and
01-07 and first mention in D-5 = 80-89) AND D-2 =
1-3,5,9, then CONSTAT = 25
Noncontraceptive male surgical D-2=4 AND (D-6 EQ 08
only; or first mention in D-5=80-89 or 96 AND D-6=96;
or 06=08 and 01-07 and first mention in D-5=80-89),
then CONSTAT = 26
Contraceptive female surgical D-2 = 1,2,3,5,9 AND D-6 =
01-07 or first mention in D-5 NE 80-89 AND D-6=96; D-6
= 01-07 and 08, and first mention in D-5 NE 80-89),
then C0NSTAT = 01
Contraceptive male surgical D-2 = 4 AND D-6=01-O7 and
D-6 NE 08; or first mention in D-5 NE 80-89 AND 6=96;
or D-6 = 01-07 and 08, and first mention in D-5 NE
80-89), then CONSTAT = 02
If 15/19 = 1 AND D-6 = 97 or 98 or 99 ONLY:
if 15/53=2, (tubal ligation), then CONSTAT=01
if 15/23=1 or 15/83=3 or 16/48=5, then CONSTAT =
25
if 16/18=4, (vasectomy), then CONSTAT=02
If the woman or couple has had more than one sterilizing
operation (2 or more operations coded in n-2) then:
if one is a female operation and the other is a male
operation, then classify using the FEMALE operation if
the reasons (D-5 and D-6) for both operations are
known.
if the reasons for one are known and the reasons for
the other are missing, use the operation for which the
reasons are known.
if both are female or both are male, then use the
EARLIER operation if both dates are known; if one date
is not missing, use the operation for which the date is
known.
If R is never married or formerly married, check for use
of male sterilization: if A-1=3-6 AND the entry in the method
calendar for the month of interview (VAR158 = 0140 or 0320-0450,
then C0NSTAT=02.
If R is nonsurgically sterile (D-14 = 01-04), then CONSTAT = 23.
If R's husband/partner is nonsurgically sterile (16/96-97=05 or
16/98-99=06), then CONSTAT = 24.
If R is using a method, check the four methods in the open
interval. If more than one method is being used, code the method
with the highest priority (female sterilization, male
sterilization, pill, IUD, diaphragm, condom and foam, condom,
Today Sponge, foam, jelly or cream, suppository or insert,
temperature rhythm, calendar rhythm, withdrawal, douche, other,
in that order, as implied by the codes below', under "CONVERT").
Take the code in 11/69-71 if 11/76=1 or 11/77=1 or
11/78-81=9696
Take the code in 11/82-84 if 11/89=1 or 11/90=1 or
11/91-94=9696
Take the code in 11/95-97 if 11/102=1 or 11/103=1 or
11/104-107=9696
Take the code in 11/108-110 if 11/113-1 or 11/116=1 or
11/117-120=9696.
CONVERT
CONSTAT
Code in C-30 Code
008,046-058, or 846-858 to PILL 03
001,092-100,892-900 to CONDOM 07
002,082-091, or 882-891 to CONDOM AND FOAM 06
005,109-115, or 909-915 to FOAM 08
007,116-121, or 916-921 to JELLY OR CREAM ALONE 15
012,122-126, or 922-926 to SUPPOSITORY OR INSERT 14
003,071-081, or 871-881 to DIAPHRAGM with or
without jelly or 05
004,136, or 936 to DOUCHE 11
006,059-070, or 859-870 to IUD 04
010,127-130, or 927-930 to TEMPERATURE RHYTHM(NFP) 12
009,131-133, or 931-933 to CALENDAR RHYTHM 09
015,134-135, or 934-935 to WITHDRAWAL 10
013,101-108, or 901-908 to TODAY SPONGE 13
016 to OTHER METHODS 16
999 to METHOD UNKNOWN 17
011, 017-031, or 817-831 FEMALE STERILIZATION 01
014, 032-045, or 832-845 MALE STERILIZATION 02
16/88-89=01 to Sterile female,
nonsurgical 23
16/100-101=07; or
16/88-101 all missing data
(97,98,or 99) to Sterile, unknown reasons 29
11/122=1 OR 11/123=1 to Seeking pregnancy 21
If D-5=20 and D-6=96, and if 014 is reported in C-30,
then CONSTAT=02; if C-30=011, then CONSTAT=01.
If R is postpartum:
If interview date is before the 15th day of month, and
difference between interview month (R-7) and month of last
pregnancy termination (R-7 minus Interval file TL22-25 IF
Interval file TL79=1 and Interval file TL22-25 NE 0000) is
less than or equal to 2, then CONSTAT = 22.
If interview date is on or after 15th day of month and
difference between interview month and month of last
pregnancy termination is less than or equal to 1, then
CONSTAT = 22.
If R never had intercourse, or never had intercourse since first
menstrual period (17/56=2), then CONSTAT = 30.
If R had intercourse only once (11/18-21=9595), then CONSTAT =
33.
Other Nonuser (Not using-codes 31 and 32):
If 11/122 = 2 and 11/123=2; or 11/67=2, or 11/67=1 and
11/116 = 2 or blank and 11/103=2 or blank 11/90=2 or
blank and 11/77=2 or blank; and:
no intercourse in last 3 months (VAR519=2), then
CONSTAT = 31.
intercourse in last 3 months (VAR19=1), then CONSTAT =
32.
Not Ascertained (CONSTAT = 99) - All cases not classified above
If CONSTAT is = 99, the case will be looked at individually by
NCHS staff and assigned a value, using the following guidelines:
If the method calendar code for the month of interview NE
9999 or Blank, then use the code in the method calendar for
the month of interview. (Use method codes as given above,
and:
0000, 5000 = code 32
3000 = code 20
4000 = code 29
If there is no useful information on the questionnaire, then code
CONSTAT = 99 and impute.
VAR438 "Wantedness of First Birth" (WTBIRTH1)
VAR438 "Wantedness of first birth" (WTBIRTH1)
WTBIRTH1=WANTWIFE for the respondent's first pregnancy ending in
live birth (07/13-14=01).
Blank = never had a birth
1 = Overdue
2 = On tine
3 = Mistimed
4 = Indifferent
5 = Unwanted
6 = Undetermined
VAR439 "Wantedness of Last Pregnancy"
VAR439 "Wantedness of last pregnancy"
WTLASTP=WANTWIFE for the respondent's last completed pregnacny
(06/80=1).
Blank = never pregnant
1 = Overdue
2 = On time
3 = Mistimed
4 = Indifferent
5 = Unwanted
6 = Undetermined
VAR440 "Wantedness of Last Live Birth" (WTLASTB)
VAR440 "Wantedness of last live birth" (WTLASTB)
WTLASTB=WANTWIFE for the respondent's last pregnancy
ending in live birth (06/79=1).
Blank = never had a birth
1 = Overdue
2 = On time
3 = Mistimed
4 = Indifferent
5 = Unwanted
6 = Undetermined
4VAR441 "Number of Births in the Last 5 Years" (BIRTHS5)
VAR441 "Number of births in the last 5 years" (BIRTHS5)
BIRTHS5 is the count of the number of pregnancies in live
birth that the respondent has had (06/16-17=01,05,07) that ended
in the 60 months before the interview (28/47-52) MINUS (06/23-28)
LE 60).
VAR442 "Number of Wanted Pregnancies in Last 5 Years" (WANTP5)
VAR442 "Number of wanted pregnancies in the last 5 years"
(WANTP5)
WANTP5 is the count of the number of pregnancies a respondent has
had that she wanted (codes 1-4 in WANTWIFE, VAR426) and that
ended in the 60 months before the date of interview
((28/47-52) minus (06/23-28) 60).
VAR540 "Century Mo of 1st Intercourse After 1st Menstrual Period
VAR540 "Century month of first intercourse after first
menstrual period" (DATESEX1)
NOTE: VAR540 is a 5-digit field. If the first column=9, this
indicates that the date is estimated from the age or age
range. For purposes of analysis, use the last 4 digits.
Seasons are converted to months.
If R never had intercourse (17/56=2) or never had intercourse
after first menstrual period (09/117-120= 9595), then DATSEX1 =
blank.
If R never had a period but R has had intecourse (04/74-75=96
AND 09/103=1), then, DATESEX1=99595
(1) If 09/117-120=9797,9898, or 9999, or 09/117-120 is blank
and 104-107=9797,9898, or 9999, go to step 4.
(2) Use the date in C-9 (09/117-120) if it is reported. If
09/117-120=9595, then R had no sex first period, so
DATESEX = 99595.
(3) If 09/117-120 is coded blank, and if a date is given in
C-6 (09/104-107) that was after her first menstrual period
(09/115=1 or 3), use the date in 09/104-107 (C-6).
(4) If C-9 = 9797,9898, or 9999, or C-9 is blank and C-6 =
9797,9898, or 9999, estimate the date from the age. (These specs
assume that C-6 is used. Use the analogous locations for C-9 if
appropriate.)
(a)If 09/108-109 is missing (97,98, or 99), go
to step 5.
(b)If 09/113 is coded 2 or 8 or 9, and 09/108-109 is not
missing (97,98,99), convert R's age at first
intercourse (09/108-109) to century months,
and add 6 nonths. (Age *12) + 6).
(c)If 09/1113 is coded 1, and 09/108-109 is not
missing (97,98,99), convert R's age at first
intercourse (09/108-109) to century months,
and subtract 6 months. (Age *12) - 6).
(d)Add result of (b) or (c) to her date of
birth in century months (03/38-43) to obtain
an estimated date of first sex.
(e)Add a "9" to the first column of VAR540 to
show that it is estimated.
(5) If R's date of first intercourse and age at first intercourse
are both missing,
(a)and if R was between 15 and 18 (09/110=1 AND
(9/111=2), then R's estimated age was the midpoint of
that range, or 16.5 years. Convert this age to
century months (16.5 *12) and go to step 4(d).
(b)and if R was between 18 and 20 (09/110=2 AND
09/112=1), then R's estimated age at first sex
was 19.0. Convert this age to (19.0 *12) months and
go to step 4(d).
(c)and if R's age range was anything else
09/110-112), code 99999. The case will be look at
individually and imputed if necessary.
(6) If DATESEX1 is after the date of first conception (TL2232-
2236), or after the date of first marriage (DATESEX1 GT 1521-1525
if 1521-25 is NOT blank or missing), or DATESEX1 GT 1538-1542, if
1538-42 is NOT blank or missing), then change DATESEX1 to equal
the date of first conception or marriage, whichever is earlier.
VAR965 "Age 1st Intercrse Since 1st Menstrual Period" (SEX1AGE)
VAR965 "Age at first intercourse since first menstrual period"
(SEX1AGE)
(1) If R never had intercourse (09/103=2) or never had
intercourse since first period (09/117-120=9595), then age at
first intercourse is not applicable, so SEX1AGE=blank.
(2) If R has ever had intercourse (SEXEVER=1):
(a)and if C-10 (09/121-122) is not blank or missing,
use the age in 09/121-122, and go to step 3.
(b)and if C-10 (09/121-122) is blank, and if C-7
(09/108-109) is not blank or missing, use the
age in 09/108-109, and go to step 3.
(3) If 09/113=2 (or 09/126=2), use the age as shown.
If 09/113=1 (or 09/126=1), subtract 1 year from the age.
(4) If R's age is missing (09/121-122=97,98,or 99, or 09/121-122=
blank and 09/108-109=97,98, or 99), and if R reports an age range
in 09/123-125 or 09/110-112, use the procedure in step 5 of
VAR540.
VAR304 "Want or Intend Another Birth" (WANTKID1)
VAR304 "Want or intend another birth" (WANTKID1)
Categories should be tested in the order listed here.
If the respondent (or husband) is surgica1ly sterile (15/19=1),
use 16/79;
If the respondent's periods have not started yet (16/102=1), use
17/24;
If the respondent is nonsurgically sterile for other reasons
(D-14=01=03 or 05-07), use 16/107;
If the respondent intends to have a sterilization operation or
abortion for health reasons (17/18=1 or 17/20=1 or 17/21=1), use
17/22;
Otherwise use 17/37 if R is currently pregnant, and 17/24 if R is
not currently pregnant.
If A would NOT like to have another child even thongh it is
unlikely or impossible that she can (16/79 or 16/107 or 17/22=2),
WANTKID1=1.
If R does NOT intend to have another child or disagrees with
husband about it (17/24 or 17/37=2 or 3), then WANTKID1=2.
If R would like to have a child or another child even though it
is unlikely or impossible that she can (16/79 or 16/107 or
17/22=1), then WANTKID1=3.
If R intends to have a baby or another baby (17/24 or 17/37=1),
then WANTKID1=4.
If R says she doesn't know if she wants to have a child or that
it is up to God (16/79 or 16/107 or 17/22=8 or 17/24 or 17/37=8),
then WANTKID1=5.
If 16/79 or 16/107 or 17/22 or 17/24 or 17/37=7 or 9, then code
WANTKID1 = 9 and inpute.
If any item = 7 or 9, then code WANTKID1 = 9 and impute.
Code categories:
1 = No, would not like
2 = No, does not intend
3 = Yes, would like
4 = Yes, intends
5 = Yes (DK, up to God)
The percent wanting nore = 3-5/1-5.
VAR305 "Collapsed WANTKID" (WANTKID2)
VAR305 "Collapsed WANTKID" (WANTKID2)
If WANTKID1=1 or 2, the R does NOT want a
baby or another baby, so WANTKID2=1.
If WANTKID1=3, 4, or 5, the R DOES want a baby
or another baby, so WANTKID2=2.
Missing data: if WANTKID1=9, then code WANTKID2 = 9 and impute.
4VAR309 "Number of Months Infertile" (INFERT)
VAR309 "Number of months infertile" (INFERT)
NOTE: This value is used to create variable 310.
If the respodent is not currently married or not infertile
(INFERT not equal to 2 or 9), then NINFERT=blank.
If the respondent is currently married or cohabiting and
infertile (INFERT coded 2), then NINFERT is the number of months
that the couple has been infertile--that is, the number of months
they have been continuously married, have not used any
contraception, and did not become pregnant.
Thus, NINFERT is calculated, for infertile respondents only, by
taking the difference, in months, between:
current marriage or cohabitation and interview,
last method use and interview, and
last pregnancy termination and interview.
The smallest of these values will be the number of months
infertile. The range will be 12 to 360.
If 16/84=1 or 16/85=1, subtract date of sterility in D-15
(16/103-106) from the date of interview (R-7) to obtain the
number of months infertile.
Note: Do not count periods of cohabitation before formal
marriage, if R cohabited and then married.
VAR310 "Infertility Status" (INFERT)
VAR310 "Infertility status" (INFERT)
(1) If the respondent is never married or formerly
married, (03/36=3-6) then infertility is not
applicable, so INFERT=BLANK.
(2) If the respondent or her husband/partner is surgically
sterile (15/19 coded 1), then the couple is surgically
sterile, so INFERT=1.
(3) If R reports that she and/or her husband/partner are sterile
for nonsurgical reasons (16/84 or 16/85 or 16/87 coded 2),
or she has never had a menstrual period (16/94-95=04), then
the couple is infertile, so INFERT=2.
(4) If R is currently pregnant (05/91=1), then she is fecund,
so INFERT=3.
(5) If the respondent has used a method in the open interval
(11/67 coded 1), and if she is still using it (11/77 or 11/90
or 11/103 or 11/116=1 or 11/78-81=9696 or 11/91-94=9696 or
11/104-107=9696), then R is fecund, so INFERT=3.
(6) If, during the 12 months or more of continuous marriage
the couple did not have a pregnancy and used no
contraception, they are classified as infertile.
(Respondents classified as infertile will have a number of
months infertile, from 12 months to 360. The number of
months will be stored in VAR309, NINFERT). That is,
(a)If R has been in her current marriage or union for
12 months or more (R-7 minus F-15 or F-28 GE 12 or
F-29 GT 11), continue with step 6b.
(b)If the case has not yet been classified (R is not
pregnant, surgically sterile, or currently using,
and has been married or cohabiting, at least 12
months), determine which of the following 4 groups R
is in:
(1)If R is never pregnant (05/85-86=00), and
never used a method (since first intercourse;
11/67=2), then R is infertile, so INFERT=2.
(2)If R is never pregnant (05/85-86=00) and ever
used a method since first intercourse
(11/67=1):
If R's date of interview MINUS the date of her
last contraceptive use is 12 months or more (R-7
MINUS the last stop use date in 11/117-120,
11/104-107, 11/91-94, or 11/78-81 GE 12 months),
then R is infertile, so INFERT=2.
(3) If R is ever pregnant (05/85-86=01-30) and
ever used a method since last pregnancy
(11/67=2):
If R's date of interview MINUS the ending date of
her last pregnancy is 12 months or more (06/80=1
AND (R-7 MINUS B-14 GE 12)), then R is infertile,
so INFERT=2.
(4) If R is ever pregnant (05/85-86=01-30) and
ever used a method since last pregnancy
(11/67=1):
(aa) If R~s date of interview MINUS the
ending date of her last pregnancy is
12 months or more ((06/80=1 AND (R-7
MINUS B-14 GE 12)), then continue
with step 4bb.
(bb) If R's date of interview MINUS the
date of her last contraceptive use is
12 months or more (R-7 MINUS the last
stop use date in 11/117-120,
11/104-107, 11/91-94, or 11/78-81 is
GE 12 months), then R is infertile,
INFERT=2.
(7) If missing data made a case bypass these tests, then:
(a) If R is currently married (03/36 coded 1 or 2) and is
not surgically sterile (15/19=2 or blank), and is
currently using a nonsurgica1 method (CONSTAT = 03-16
or the method calendar for the month of interview shows
a method use code other than sterilization (001-010,
012, 013, 015, 016, 046-136, 846-936), or a current
pregnancy (300), then R is fecund, INFERT=3.
(b) If R is living with a partner (03/36=2) and the date
she began living together is missing (23/96-99=9999)
and the length of living together is missing
(23/100-102=997, 998, or 999) and her ability to have
children is unknown (16/84 or 16/85= 8 or 9) and her
method calendar does not show contraceptive use
(METHCAL=0000,9999, or 5000), then code R as fecund,
INFERT=3.
If there is too much missing data to classify the
respondent, code INFERT = 9. The case will be examined
by NCHS staff and imputed if necessary.
(8) All other cases are fecund, INFERT=3
NOTE: These specs include informally married, or cohabiting,
women (03/36=2) as married. To maintain comparability with cycle
3 (1982) results, INFORMALLY MARRIED (COHABITING) WOMEN MUST BE
EXCLUDED.
SEE SPECS FOR VAR309 (NINFERT).
VAR320 "Type of Sterilization Operation" (STRLOPER)
VAR320 "Type of sterilization operation" (STRLOPER)
If the respondent or her current husband/partner has not been
surgically sterilized (15/19 coded 2 or blank, then STRLOPER=5,
not surgically sterilized.
If there is only one operation coded (15/23 coded 1 or 15/53
coded 2 or 15/83 coded 3 or 16/18 coded 4 or 16/48 coded 5 only),
then:
If Tubal ligation (15/53 coded 2), STRLOPER=1.
If Hysterectomy (15/83 coded 3), STRLOPER=2.
If Vasectomy (16/18 coded 4), STRLOPER=3
If Other or unknown type (15/23 coded 1 or 16/48 coded 5)
or (15/19 coded 1 and 15/23 or 15/53 or 15/83 or 16/18 or
16/48 coded 7,8, or 9), then STRLOPER=4.
If there are two or more operations coded in D-2 then:
If there is a male operation (16/18 coded 4) AND a female
operation (15/23=1 or 15/53=2 or 15/83=3 or 16/48=5) coded,
then use the female operation if the reasons (D-5 and D-6) are
known; if the reasons for one operation are known and the
reasons for the other operation are missing, use the operation
for which the reasons are known.
If there are 2 female operations or 2 male operations, then
classify the respondent according to the earlier operation
(compare the dates in D-3) if both dates are known. If the date
of one operation is missing and the date of the other operation
is known, classify R using the operation for which the date is
known.
VAR360 "Fecundity Status"
VAR360 "Fecundity status"
If it is impossible for the respondent or her current husband or
partner to have a (nother) baby because of a sterilizing operation
that was done for contraceptive reasons:
If the number of operations coded in D-2 is one, AND If
15/19 is coded 1 AND one of the following: (first mention in
D-5 NE 80-89 and NE 96,97,98, or 99 AND D-6=96) or D-6=01-07
and D-6 NE 08; or D-6=01-07 and D-6=08 and first mention in
D-5 NE 80-89) then she is contraceptively sterile, so
FECUND=1.
If the woman or couple have had more than one sterilizing
operation (coded in D-2):
if one is a female and the other is a male operation,
classify using the female operation if the reasons (D-5)
and D-6) for both operations are known; if the reasons
for one are known, and the reasons for the other are
missing, use the operation for which the reasons are
known.
if both are female, or both are male, classify using
the earlier operation if both dates are known; if one
date is missing and the other date is not missing, use
the operation for which the date is known.
If it is impossible for the respondent or her current husband to
have a (nother) baby because of a sterilizing operation that was
done for noncontraceptive reasons (15/19 is coded 1 AND first
mention in D-5=80-89 or 96 AND D-6=96; or D-6=08 or 96 ONLY, or
D-6=08 and 01-07, and first mention in D-5=80=89), then she is
surgical1y sterile for noncontraceptive reasons, so FECUND=2.
If 15/19=1 AND D-6=97,98, or 99 for the only operation, or for
the operation which should be used to classify the case:
and if D-2=2 or 4, then FECUND=1
and if D-2=1,3, or 5, then FECUND=2.
If it is impossible for the respondent to have a(nother) baby for
reasons other than surgical sterilization (16/84=2 or 16/85=2 or
16/87=2), then she is nonsurgically sterile, so FECUND=3.
If she reports that it is difficult for her, and/or her current
husband, to conceive or deliver a(nother) baby (16/108 coded 1),
or a medical doctor advised her never to become pregnant (again)
and said it would be dangerous for her and/or the baby and she
will have an operation to be sure she won't become pregnant
(17/18 coded 1), or her husband or partner will have an operation
(17/20 coded 1), or if she becomes pregnant (again) she will have
the pregnancy ended (17/21 coded 1), then she is subfecund, so
FECUND = 4.
If the respondent has used a method in the open interval (11/67
coded 1), and she is still using it (11/77 or 11/90 or 11/103 or
11/116 coded 1 or 11/78-81=9696 or 11/91-94=9696 or
11/98-101=9696), then R is fecund, so FECUND = 6.
If, during the 36 months or more of continuous marriage or
cohabitation the couple did not have a pregnancy and used no
contraception, she is classified as having a long interval.
That is:
(a) If the interval between the date of interview and the
date of the current marriage or cohabitation is 36 months or
more** (R-7 minus F-15 or F-28 GE 36), continue with step
7b.
(b) If the case has not yet been classified, determine which
of the following 4 groups R is in:
(1) Never pregnant (05/85-86=00), and never used a
method since first intercourse (11/67=2), then R has a
long interval (FECUND=5).
(2) Never pregnant (05/85-86=00) and ever used a method
since first intercourse (11/67=1):
If R's date of interview MINUS the date of her
last contraceptive use is 36 months or more (R-7
MINUS the last stop use date in 11/117-120,
11/104-107, 11/91-94, or 11/78-81 GE 36 months--
choose the location by finding 11/76, 11/89,
11/102, or 11/115=2), then R has a long interval,
so FECUND=5.
(3) Ever pregnant (05/85-86=01-30) and never used a
method since last pregnancy (11/67=2):
**(R-7 minus F-15) GE 36; or (R-7 minus F-28) GE 36
If R's date of interview MINUS the ending date of
her last pregnancy is 36 months or more (06/80=1
AND (R-7 MINUS B-14 GE 36)), then R is infertile,
so FECUND=5.
Otherwise, R is fecund (FECUND=6).
(4) Ever pregnant (05/85-86=01-30) and ever used a
method since last pregnancy (11/67=1):
(aa) If R's date of interview MINUS the
date of her last pregnancy is 36 months or more
((06/80=1 AND (28/47-52 MINUS 06/23-28 IF
06/80=1)), then continue with step 7b4bb.
(bb) If R's date of interview MINUS the date of
her last contraceptive use is 36 months or more
(R-7 MINUS the last stop use date in 11/117-120,
11/104-107, 1l/91-94 or 11/78-81 is GE 36
months), then R has a long interval, so FECUND=5.
If R is not surgically sterile (15/19 coded 2 or blank), and is
currently using a nonsurgical method of contraception (CONSTAT =
03-17 OR the method calendar for the month of interview shows a
method use code other than sterilization, or a current pregnancy
or nonitercourse ((0010-0100, 0120, 0130, 0150, 0160, 0460-1360,
3000, 5000, 8460=9360)), then R is fecund, so FECUND=6.
If D-1=2, D-11 NE 2, D-13 NE 2, AND D-17 NE 1, then R
is Fecund (code 6), even if there is missing data on D-19,21,22,
or 23.
If R has never been pregnant, never been married, and D-13-8 or 9
or D-17=8 or 9, and Method Calendar=9's, then R is fecund (code
6).
If R is not married (03/36=3-6) and not havimg intercourse or
never had intercourse (CONSTAT=31 or 30), AND 16/84 or 16/85 or
16/87, or 16/108=8, then FECUND=6.
3 cases:
If ability to have children is not ascertained and R is
married or cohabiting (D-11 and D-12=9), and CONSTAT=31
(nonuser, no sex in last 3 months), code FECUND=6 (fecund).
If R still has not been assigned a code, then the case is
assigned a value after looking at a printout of the entire case.
If there was no useful information, then code FECUND = 9 and
impute.
VAR380 "Nonintercourse in the Last 12 Months" (NOSEX12)
VAR380 "Nonintercourse in the last 12 months" (NOSEX12)
If R never had intercourse, or never had intercourse since first
menstrual period (17/56 coded 2), then NOSEX12=96.
If R had intercourse only once (11/18-21=9595), then the number
of months of nonintercourse is the date of interview (28/47-52)
MINUS DATESEX1 (range=0-12)
If R has had no periods of nonintercourse (11/18-21=9696) then
NOSEX12=00.
If R is never pregnant, use 11/18-41. If R is ever pregnant, use
11/43-66 for the open interval and 10/20-43 for each of the
closed intervals ending in the last 12 months.
If any of the months of nonintercourse (10/20-43 OR 11/18-41 OR
11/43-66) fall within the last 12 months -- that is, the date of
the interview (28/47-52) MINUS the ending date of the period of
nonintercourse, is less than or equal to 12 months, then NOSEX12
is the NUMBER OF MONTHS within the last 12 months, that the
respondent did not have intercourse at all.
Code categories:
96 = Never had intercourse
0-12 = Number of months of nonintercourse
VAR382 "Nonintercourse in the Last 36 Months" (NOSEX36)
VAR382 "Nonintercourse in the last 36 months" (NOSEX36)
Repeat specifications for VAR80, but use the last 36 months,
rather than the last 12 months.
Code categories:
96 = Never had intercourse
00-36 = Nusber of months of nonintercourse
4VAR385 "Duration of Current Period of Nonintercourse" (NOSEXDUR)
VAR385 "Duration of the current period of nonintercourse
(NOSEXDUR)
If R has never had intercourse or never had intercourse since
first period (17/56 coded 2), then NOSEXDUR = blank.
If R had no intercourse after the first time (11/18-21 coded
9595), then NOSEXDUR = the date of interview (14/122-125) minus
the date of first intercourse (VAR540).
If R is currently having intercourse (11/68 coded 2; or 10/19 and
11/42 coded 2 or blank and 11/18-19 coded 96, or the ending date
of the last period of nonintercourse in 10/20-43, 11/18-41, or
11/43-66 is less than the date of interview), then NOSEXDUR=996.
For all other R's (11/68 coded 1), the beginning and ending dates
of the current period of nonintercourse are in the last non-blank
entry 11/18-41, 11/43-66, or 10/20-43. NOSEXDUR = the date of
interview (14/22-25) minus the start date for the last non-blank
entry 11/18-41, 11/43-66, or 10/20-43.
VAR420 "Central Number of Additional Births Expected" (ADDEXP)
VAR420 "Central number of additional births expected" (ADDEXP)
If R is not currently pregnant (05/91 coded 2):
If R does not intend to have more children (17/24 coded 2),
or the questions are inapplicable (17/24 coded blank), then
R's additional number expected is zero, so ADDEXP=000.
If 17/24=3 or 8 and 17/28-29=00 and 17/30-31=blank, then
ADDEXP=000.
If R intends more (17/24 coded 1), and she gives an intended
numher in D-26, then ADDEXP = 10 times the number in
17/25-26.
If R did not give an intended number (17/24 coded 3 or 8 or
17/25-26 coded 98), but did give a largest and smallest
number (17/28-29 and 17/30-31 NE 97,98, or 99),
then ADDEXP is the average of the largest and smallest
number expected; i.e., 10 times ((17/28-29) + (17/30-31)
/2).
If 17/28-29 or 17/30-31 = 97,93, or 99, then code ADDEXP =
999 and impute.
If R is currently pregnant (05/91 coded 1), add 1 child (times
10) to her additional number expected, and use 17/37-44 to find
ADDEXP:
If R does not intend to have more children after her current
pregnancy (17/37 coded 2), then ADDEXP = 010.
If 17/37=3 or 8, and 17/41-42=00, and 17/42-43=blank, then
ADDEXP=010.
If R intends more after her current pregnancy (17/37 coded
1), then ADDEXP = (10) times ((17/38-39) + (1)).
If R did not give an intended number (17/37 coded 3 or 8 or
17/38-39 coded 98) but did give a largest and smallest, then
ADDEXP = the average of the largest and smallest number
expected, plus one for the current pregnancy, so ADDEXP = 10
times ((17/41-42)+(17/43-44) / 2) +1).
If the largest or smallest number expected is not known
(17/41-42 or 17/43-44 coded 97,98,99), then code ADDEXP =
999 and impute.
If R gave a range in D-33 (17/38-39 coded 96), then ADDEXP
is the average of the range, plus 1 for the current
pregnancy, times 10: ADDEXP = 10 times ((17/69-70) +
(17/71-72) / 2) + 1.
If D-28 (largest) is a number, but D-29 (smallest) is 97, 98, or
99, use (largest) minus (1 child) = smallest, to compute ADDEXP:
((17/28-29) - 1) * 10 = ADDEXP.
If R reported a range in D-26 (17/25-26 coded 96), then ADDEXP is
the average of the range: ADDEXP = 10 tines (17/57-58 + 17/59-60
/ 2).
VAR985 "Intentions for Additional Births" (INTENT)
VAR985 "Intentions for additional births" (INTENT)
NOTE: For currently pregnant women INTEN refers to intentions
after the current pregnancy.
If 17/24 or 17/37 is coded 7 or 9, then code INTENT = 9 and
impute.
If the respondent is sterile, or subfecund and intends an
operation or abortion if she does become pregnant again (17/24
coded blank AND 17/23 coded 2 or blank)*, OR if R says that she
does not intend to have a(nother) baby (17/24 ooded 2 or 17/37
coded 2), then she does not intend to have a(nother) baby, so
INTENT=2.
If R says she intends to have a(nother) baby (17/24 or 17/37
coded 1), then she does intend (more) children, so INTENT=1.
If R said that she didn't know, it was to God, etc. (17/24
coded 8 or 17/37 coded 8), then her intent is unclear, so
INTENT=3.
If she and her husband disagree (17/24 or 17/37 coded 3), then
they disagree, so INTENT=4.
* (This test may also be written: 15/19 coded 1 or 16/84 coded 2
or 17/18 coded 1 or 17/20=1 or 17/21=1).
VAR205 "Serv Used at 1st Family Plan Visit: New Method" (FP1MTHD
VAR205 "Services used at the first family planning visit: got a
new method" (FP1MTHD)
If the respondent was 25 years of age or older at interview, or
never had a family planning visit, or she never had intercourse
(19/88-89 coded blank or 17/56 coded 2), or if the respondent
received a pregnancy test only at first visit (20/44 coded 1),
and reported no second visit for family planning services (20/45-
48 coded 9696), then services used at first visit is not
applicable, code blank.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and reported "getting a new method of birth
control" at the first visit (19/92-93 coded 03), or if the
respondent received a pregnancy test only at first visit (20/44
coded 1), and reported a second visit for family planning
services (20/45-48 ne 9696 and not blank), and reported "getting
a new method of birth control" at the next visit (20/56-57 coded
03), then she got a new method of birth control at her first
visit, code 1.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and if the respondent did not report
"getting a new method of birth control" at the first visit
(19/92-93 coded 00), or if the respondent received a pregnancy
test only at first visit (20/44 coded 1), and reported a second
visit for family planning services (20/45-48 ne 9696 and not
blank) and did not report "getting a new method of birth control"
at the next visit (20/56- 57 coded 00), then she did not get a
new method of birth control at her first visit, code 2.
VAR210 "Serv Used at 1st Family Plan Visit: Other Med" (FP1OMED)
VAR210 "Services used at the first family planning visit: other
medical" (FP1OMED)
If the respondent was 25 years of age or older at interview, or
never had a family planning visit, or she never had intercourse
(19/88-89 coded blank or 17/56 coded 2), or if the respondent
received a pregnancy test only at first visit (70/44 coded 1),
and reported no second visit for family planning services (20/45-
48 coded 9696), then services used at first visit is not
applicab1e, code blank.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and reported getting a medical service other
than getting a new method of birth control at the first visit
(19/88-89 coded 01, 19/90-91 coded 02, 19/94-95 coded 04, 19/96-
97 coded 05, or 19/98-99 coded 06), or if the respondent received
a pregnancy test only at first visit (20/44 coded 1), and
reported a second visit for family planning services (20/45-48 ne
9696 and not blank), and reported getting a medical service other
than getting a new method of birth control at the next visit
(20/52-53 coded 01, 20/54-55 coded 02, 20/58-59 coded 04, 20/60-
61 coded 05, or 20/62-63 coded 06), then code 1.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and if the respondent did not report getting
a medical service other than getting a new method of birth
control at the first visit (19/88-89 coded 00, and 19/90-91 coded
00, and 19/94-95 coded 00, and 19/96-97 coded 00, and 19/98-99
coded 00), or if the respondent received a pregnancy test only at
first visit (20/44 coded 1), and reported a second visit for
family planning services (20/45-48 ne 9696 and not blank) and did
not report getting a medical service other than getting a new
method of birth control at the next visit (20/52-53 coded 00, and
20/54-55 coded 00, and 20/58-59 coded 00, and 20/60-61 coded 00,
and 20/62-63 coded 00), then she did not get a new method of
birth control at her first visit, code 2.
VAR215 "Serv Used at 1st Fam Plan Visit: Advice on Birth Control
VAR215 "Services used at the first family planning visit: advice
on birth control" (FP1FPADV)
If the respondent was 25 years of age or older at interview, or
never had a family planning visit, or she never had intercourse
(19/88-89 coded blank or 17/56 coded 2), or if the respondent
received a pregnancy test only at first visit (20/44 coded 1),
and reported no second visit for family planning services (20/45-
48 coded 9696), then services used at first visit is not
applicable, code blank.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and reported getting advice or counseling on
birth control at the first visit (19/100-101 coded 07), or if the
respondent received a pregnancy test only at first visit (20/44
coded 1), and reported a second visit for family planning
services (20/45-48 ne 9696 and not blank), and reported getting
advice or counseling on birth control at the next visit (20/64-65
coded 07), then code 1.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and if the respondent did not report getting
advice or cooling on birth control at the first visit (19/100-
101 coded 00), or if the respondent received a pregnancy test
only at first visit (20/44 coded 1), and reported a second visit
for family planning services (20/45-48 ne 9696 and not blank) and
did not report getting advice or counseling on birth control at
the next visit (20/64-65 coded 00), then code 2.
VAR220 "Serv Used at 1st Fam Plan Visit: Other Advice" (FP10ADV)
VAR220 "Services used at the first family planning visit: other
advice" (FP10ADV)
If the respondent was 25 years of age or older at interview, or
never had a family planning visit, or she never had intercourse
(19/88-89 coded blank or 17/56 coded 2), or if the respondent
received a pregnant test only at first visit (20/44 coded 1),
and reported no second visit for family planning services (20/45-
48 coded 9696), then services used at first visit is not
applicable, code blank.
If the respondent received services other than a pregnancy test
only (20/44 coded 2) and reported getting advice or counseling
other than advice or counseling on birth contro at the first
visit (19/102-103 coded 08, 19/104-105 coded 09, 19/106-107 coded
10, 19/108-109 coded 11), or if the respondent received a
pregnancy test only at first visit (20/44 coded 1), and reported
a second visit for family planning services (20/45-48 ne 9696 and
not blank), and reported getting advice or counseling other than
advice or counseling on birth control at the first visit (20/66-
67 coded 08, 20/68-69 coded 09, 20/70-71 coded 10, 20/72-73 coded
11), then code 1.
If the respondent received services other than a pregnant test
only (20/44 coded 2) and if the respondent did not report getting
advice or counseling other than advice or counseling on birth
control (19/102-103 coded 00, and 19/104-105 coded 00, and
19/106-107 coded 00, and 19/108-109 coded 00), or if the
respondent received a pregnancy test only at first visit (20/44
coded 1), and reported a second visit for family planning
services (20/45-48 ne 9696 and not blank) and did not report
getting advice or counseling other than advice or counseling on
birth control at the next visit (20/66-67 coded 00, and 20/68-69
coded 00, and 20/70-71 coded 00, and 20/72-73 coded 00), then she
did not get a method of birth control at her first visit, code 2.
VAR225 "Age at First Use of Family Planning Services"
VAR225 "Age at first use of family planning services"
If the respondent has never had a family planning visit or never
had intercourse (19/77-80 coded blank or 17/56 coded 2), or if
the respondent received a pregnancy test only at first visit
(19/88-89=01 AND 19/90-19/109=00), and reported no second visit
for family planning services (the date of the first visit, TL
1209-1212, equals the date of the last visit, 1164-1167), or
if the respondent received a pregnancy test only at both her
first and second visit (19/88-89=01 and 19/90-109=00 and 20/52-
53=01 and 20/54-73=00), and she had only those two visits (19/33-
36=19/77-80=20/45-48) ,* then her age at first visit is not
applicable, code blank.
If the respondent received services other than a pregnancy test
only at her first visit (19/90-91=02 or 19/92-93=03 or 19/94-
95=04...19/108-109=11) or is 25 and older, then age at first use
of family planning services is in locations 19/77-83. If the
respondent received a pregnancy test only at first visit (19/88-
89=01 AND 19/90-19/109=all zeroes), and reported a second visit
for family planning services (a date is reported in 20/45-48 or
an age in 20/49-50), then age at first use of family planning
services should be taken from locations 20/45-51.
If the respondent gave the month and year of her first family
planning visit, then her age at first visit is the century month
of first visit (19/77-80 or 20/45-48) minus the century month of
her birth (03/38-43), divided by 12 and truncated to an integer.
If the respondent gave her age at first visit (19/81-82 or 20/49-
50 coded 13 through 45) and her first visit was after her
birthday (19/83 or 20/51 coded 2), then that (19/81-82 or 20/49-
50) is her age at first visit.
If the respondent gave her age at first visit (19/81-82 or 20/49-
50 coded 10 through 44) and her first visit was before her
birthday (19/83 or 20/51 coded 1), then age at first visit is her
reported age at first visit (19/81-82 or 20/49-50) minus 1.
*NOTE: When 20/44=1 and 20/45-48=9696, the dates of the first and
last visit are sometimes different indicating that the woman had
more than 1 visit, and 20/25-48=9696 is coded incorrectly. So
the code 20/45-48=9696 is not used in this recode. Instead, the
dates of the first visit (TL 1209-1212) and the last visit (TL
1170-1173) are compared.
If the case meets none of the conditions to be BLANK, and there
is too much nissing data to classify the age as 05-44, then code
FP1AGE = 99 and impute.
VAR227 "Timing of First Visit and First Intercourse" (TIMVIS1)
VAR227 "Timing of first visit and first intercourse" (TIMVIS1)
If the respondent has never had a family planning visit or never
had intercourse (19/77-80 coded blank or 17/56 coded 2), or if
the respondent received a pregnancy test only at first visit
(20/44 coded 1), and reported no second visit for family planning
services (20/45-48 coded 9696), then timing of first visit and
first intercourse is not applicable, code blank.
If the respondent received services other than a pregnancy test
only at first visit (20/44 coded 2) or is 25 and older, and did
not report a date of first family planning visit (19/79-82 code
9797, 9898 or 9999), and:
if 19/84 coded 1 or blank, or 19/85=blank, then code 1.
if 19/84 coded 2 and 19/85 coded 1, then code 2.
if 19/84 coded 2 and 19/85 coded 2, then code 3.
if 19/84 coded 2 and 19/85 coded 3, then code 4.
if 19/84 coded 2 and 19/85 coded 4, then code 5.
if 19/84 coded 2 and 19/85 coded 5, then code 6.
If the respondent received services other than a pregnancy test
only at first visit (20/44 coded 2) or is 25 and older, and
reported a date of first family planning visit (19/79-82 NE 979,
9898, 9999) or if the respondent received a pregnancy test only
at first visit (20/44 coded 1):
if MONVIS1 is less than DATESEX1, then code 1.
if MONVIS1 equals DATESEX1, then code 2.
if MONVIS1 minus DATESEX1 equals 1-3, then code 3.
if MONVIS1 minus DATESEX1 equals 4-6, then code 4.
if MONVIS1 minus DATESEX1 equals 7-12, then code 5.
if MONVIS1 minus DATESEX1 is greater than 12, then code
6.
Code Categories:
1 = Before First Intercourse
2 = Same Month
3 = 1-3 Months After First Intercourse
4 = 4-6 Months After First Intercourse
5 = 7-12 Months After First Intercourse
6 = More than 12 Months After First Intercourse
VAR228 "Timing of First Visit and First Pregnancy" (TIMVIS2)
VAR228 "Timing of first visit and first pregnancy" (TIMVIS2)
If the respondent has never had a family planning visit or never
had intercourse (19/77-80 coded blank or 17/56 coded 2), or if
the respondent received a pregnancy test only at first visit
(20/44 coded 1), and reported no second visit for family planning
services (20/45-48 coded 9696), then timing of first visit and
first pregnancy is not applicable, code blank.
If R has ever had intercourse (17/56 coded 1) but has never been
pregnant (5/85-86 coded 00), code 1, never pregnant.
If the Respondent has ever been pregnant (5/85-86 GE 01) and
date of first family planning visit (Var226, MONVIS1) is less
than DATE1CON, then code 2, first visit before first pregnancy.
If the respondent has ever been pregnant (5/85-86 GE 01) and date
of first family planning visit (Var226, MONVIS1) is greater than
or equal to DATE1CON, but less than or equal to PREG1MON, then
code 3, first visit during first pregnancy.
If the respondent has ever been pregnant (5/85-86 CF 01) and
date of first family planning visit (Var226, MONVIS1) is greater
than PREG1MO, then code 4, first visit after first pregnancy.
If R has ever been pregnant (05/85-86 GE 01) and DATE1CON
(VAR606)=9999, then if the date of the first family planning
visit (MONVIS1, VAR226) is greater (later) than the date of the
first pregnancy (PREG1MO) then code 4.
Otherwise, if the date of the first family planning visit
(MONVIS1) is less than (before), or equal to the date of the
first pregnancy, and the date of the first visit (MONVIS1,
VAR226) is greater than or equal to (PREG1MO=9), then code 3.
If FP1AGE is non-blank and TIMVIS2 is blank, then change TIMVIS2
to 9 and impute.
4VAR230 "First Source of Family Planning Services" (FP1SRC)
VAR230 "First source of family planning services" (FP1SRC)
If the respondent was 25 years of age or older at interview
(03/38-43 coded le 031563), then source of first visit is not
applicable, code blank.
If the respondent was under 25 (03/38-43 coded ge 031563), and
had not had a family planning visit or if she had never had
intercourse (20/18-19 coded blank or 17/56 coded 2); or if the
respondent received a pregnancy test only at first visit (20/44
coded 1), and reported no second visit for family planning
services (20/45-48 coded 9696); then she has not had a visit
while sexually active, code 6.
If the respondent received services other than a pregnancy test
only (20/44 coded 2), then source of first visit for family
planning services is in locations 20/18-19. If the respondent
received a pregnancy test only (20/44 coded 1) and reported a
second visit for family planning services (20/45-48 ne 9696 and
not blank), then first source of family planning services is in
locations 20/74-75.
If the respondent's first family planning visit was to a private
doctor, private group practice, co-op or private clinic (20/18-19
or 20/74-75 ceded 07 or 08 or 93), then the first source of
services was private medical services, code 1.
If the respondent's first family planning visit was to a hospital
clinic, family planning clinic, community health center clinic,
abortion clinic, public health department clinic, military health
clinic, student health clinic, or other clinic (20/18-19 or
20/74-75 coded 01-06,94,95, or 96), then the first source was
clinic, code 2.
If the first family planning visit was to a minister, priest,
religious counselor, school counselor, family and social services
agency, youth center, or other counselor (20/18-19 or 20/74-75
coded 09, 10, 11, 12 or 13), then the first source was
counselors, code 3.
VAR240 "Services Used at Most Recent Fam Plan Visit: Got Method"
VAR240 "Services used at the most recent family planning visit:
got a method" (FPLSTMTH)
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the
recent services used is not applicable, code blank.
If the respondent has had one family planning visit in the last
12 months (19/40 coded 2), then the most recent services are
locations 18/57-67; if 18/57-67 are all blank, then use 19/41-62.
If the respondent has had 2 or more family planning visits in the
last 12 months (19/40 coded 3), or she ever had a visit but no
visits in the last 12 months (19/40 coded 1), then the most
recent services are in locations 19/41-62.
If the respondent reported "getting a method of birth control" at
her last visit (18/59 coded 1 or 19/45-46 coded 03), then she got
a method of birth control at her most recent visit, code 1.
If she reported getting a service at latest visit, but did not
mention getting a method of birth control (18/59 coded 2 or blank
or 19/45-46 coded 00), then code 2.
NOTE: Over 600 cases not ascertained. If BOX52=1 or 3, check E-
23. If E-23C=9's, then check E-10C. If E-10C=2, ccde VAR240=2.
If 10C=1, code 1. If BOX52=9, check E-23 first, then check E-
10C.
NOTE: See VAR266 for causes of missing data
VAR242 "Serv Used at Most Recent Fam Plan Visit: Cont Method"
VAR242 "Services used at the most recent family planning visit:
continued a method" (FPLSTCON)
If the respondent has never had intercourse (since first period
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 code 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the
recent services used is not applicab1e, code blank.
If the respodent has had one family planning visit the last
12 months (19/40 coded 2), then the most services are in
locations 18/57-67; if 18/57-67 are all blank, then use 19/41-62.
If the respondent has had 2 or more family planning visits in the
last 12 months (19/40 coded 3), or she ever had a visit but
visits in the last 12 months (19/40 coded 1), then the most
recent services are in locations 19/41-62.
If the respondent reported "renewing a method of birth control"
at her latest visit (18/58 coded 1 or 19/43-44 coded 02), then
she renewed a method of birth control at her latest visit, code
1.
If she reported getting a service at latest visit, but did not
mention renewing a method of birth control (18/58 coded 2 or
blank or 19/43-44 coded 00), the code 2.
VAR245 "Serv Used at Most Recent Fam Plan Visit: Other Medical"
VAR245 "Services used at the most recent family planning visit:
other medical" (FPLSTMED)
If the rsspondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 ooded 1), and reported no second visit for
family planning services (20/45-48 ooded 9696), then the most
recent services used is not applicable, code blank.
If the respondent has had one family planning visit in the last
12 months (19/40 coded 2), then the most recent services are
locations 18/57-67; if 18/57-67 are all blank, then use 19/41-62.
If the respondent has had 2 or more family planning visits in the
last 12 months (19/40 coded 3), or she ever had a visit but no
visits in the last 12 months (19/40 coded 1), then the most
recent services are in locations 19/41-62.
If the respondent reported getting a medical service other than
getting a method of birth control (18/57, 18/58, 18/60, 18/61, or
18/62 coded 1; or 19/41-42 coded 01, 19/43-44 coded 02, 19/47-48
coded 04, 19/49-50 coded 05, or 19/51-52 coded 06), then code 1.
If the respondent did not mention getting another medical service
(18/57, 18/58, 18/60, 18/61, and 18/62 all coded 2 or blank; or
19/41-42, 19/43-44, 19/47-48, 19/49-50, and 19/51-52 all coded
00), then code 2.
NOTE: "Other medical" includes RENEWING a method, a pregnancy
test, getting a sterilizing operation, health problems from using
a method, and correct use or fit of a method. It does NOT include
GETTING a method for the first time.
VAR250 "Serv Used at Recent Fam Plan Visit: Advice Birth Control
VAR250 "Services used at the most recent family planning visit:
advice on birth control" (FPSTADV)
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent services used is not applicable, code blank.
If the respondent has had one family planning visit in the last
12 months (19/40 coded 2), then the most recent services are in
locations 18/57-67; if 18/56-67 are all blank, then use 19/41-62.
If the respondent has had 2 or more family planning visits in the
last 12 months (19/40 coded 3), or she ever had a visit but no
visits in the last 12 months (19/40 coded 1), then the most
recent services are in locations 19/41-62.
If the respondent reported getting advice or counseling on birth
control (18/63 coded 1; or 19/53-54 coded 07), then R received
advice on birth control, code 1.
If the respondent did not mention getting advice or counseling on
birth control (18/63 coded 2 or blank; or 19/53-54 coded 00) then
code 2.
VAR255 "Serv Used at Most Recent Fam Plan Visit: Other Advice"
VAR255 "Services used at the most recent family planning visit:
other advice"
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent services used is not applicab1e, code blank.
If the respondent has had one family planning visit in the last
12 months (19/40 coded 2), then the most recent services are in
locations 18/57-67; if 18/57-67 are all blank, then use 19/41-62.
If the respondent has had 2 or more family planning visits in the
last 12 months (19/40 coded 3), or she ever had a visit but no
visits in the last 12 months (19/40 coded 1), then the most
recent services are in locations 19/41-62.
If the respondent reported getting other advice or counseling
(18/64, 18/65, 18/66 or 18/67 coded 1; or 19/55-56 coded 08,
19/57- 58 coded 09, 19/59-60 coded 10, or 19/61-62 coded 11),
then R got other advice, code 1.
If the respondent did not mention getting other advice or
counseling, (18/64, 18/65, 18/66 and 18/67 all coded 2 or blank;
or 19/55-56, 19/57-58, 19/59-60, and 19/61-62 all coded 00), then
R did not get other advice, code 2.
VAR260 "Source of Payment Fam Plan Visit:Self,Partner,Fam,Friend
VAR26O "Source of payment for the most recent family planning
visit: self, partner, family or friends" (FPPAYSLF)
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent services used is not applicable, code blank.
If the respondent reported as a source of payment for her latest
family planning visit her own income, her boyfriend, parents, or
other relatives (19/65-66 coded 01, or 19/67-68 coded 02), code
1.
If the respondent did not mention either of those sources (19/65-
66 coded 00 and 19/67-68 coded 00,) code 0.
VAR261 "Source Payment for Recent Fam Planning Visit: Insurance"
VAR261 "Source of payment for the most recent family planning
visit: insurance" (FPPAYINS)
No recode needed (19/69-70).
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the
recent services used is not applicable, code blank.
If R mentioned insurance (19/69-70 coded 03), then she used
insurance, so VAR261=1.
If R did not use insurance (19/69-70 coded 00), then VAR261=0.
If 19/69-70 is blank, 97,98, or 99, then code FFPAYINS = 99 and
impute.
VAR262 "Source Payment for Recent Fam Planning Visit: Medicaid"
VAR262 "Source of payment for the most recent family planning
visit: Medicaid" (FPPAYMED)
No recode needed (19/71-72)
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent services used is not applicable, code blank.
If 19/71-72 = blank, 97,98, or 99, then code FPPAYMED = 99 and
impute.
VAR263 "Source of Payment for Recent Fam Plan Visit: Other Govt"
VAR263 "Source of payment for the most recent family planning
visit: other government" (FPPAYGOV)
No recode needed (19/73-74)
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent services used is not applicable, code blank.
If 19/73-74 = blank, 97,98, or 99, then code FPPAYGOV = 99 and
impute.
VAR264 "Source of Payment for Recent Family Plan Visit: Other"
VAR264 "Source of payment for the most recent family planning
visit: other" (FPPAYOTH)
No recode needed (19/75-76)
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent services used is not applicable, code blank.
If 19/75-76 = blank, 97,98, or 99, then code FPPAYOTH = 99 and
impute.
VAR266 "Most Recent Source of Family Planning Services"
VAR266 "Most recent source of family planning services"
If the respondent has never had intercourse (since first period)
(17/56 coded 2), or she has never had a family planning visit
(19/32 coded 2), or she received a pregnancy test only at her
first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), then the most
recent used is not applicable, code blank.
If the respondent has had one family planning visit in the last
12 months (19/40 coded 2), then the most recent source of
services in locations 18/69-94.
If the respondent has had 2 or more family planning visits in the
last 12 nonths (19/40 coded 3), or she ever had a visit but no
visits in the last 12 months (19/40 coded 1), or the number of
visits is missing (19/40 coded 7,8, or 9), then the most recent
source of services is in locations 19/63- 64; if 19/63-64=97,98,
or 99, then use 18/69-94 (E-13).
If R's last visit was to a clinic (18/69-70 coded 01, 18/71-72
coded 02, 18/73-74 coded 03, 18/75-76 coded 04, 18/77-78 coded
05, 18/79-80 coded 06 or coded 94,95, or 96; or 19/63-64 coded
01-06, or 95 or 96), then code 1 (clinic).
If R's last visit was to a private doctor or private group
practice (18/81-82 coded 07 or 18/83-84 coded 08; or 19/63-64
coded 07 or 08 or 93), then code 2 (private medical service).
If R's last visit was to a counselor (18/85-86 coded 09, 18/87-88
coded 10, 18/89-90 coded 11, 18/91-92 coded 12, or 18/93-94 coded
13; or 19/63-64 coded 09-13), then code 3 (counselor).
600+ cases not ascertained. So use E-24 unless E-24 has missing
data; if E-24 is missing, then use E-13 (if there is an entry in
E-13).
Causes of missing data.
1. Interviewer Mistake in BOX52 (erroneously skipped E-24)
2. E-21=2 (Never had a visit), but R has used a method --
usually IUD or Female Sterilization.
VAR270 "Family Planning Visits in the Last 12 Months: Private"
VAR270 "Family planning visits in the last 12 months: private"
If the respondent or her husband was sterile before January 1987
(18/56 coded 1), or she has never had intercourse (since first
period) (17/56 coded 2), or she received a pregnancy test only at
her first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), visits in the
last 12 months is not applicable, code blank.
If the respondent has not had a family planning visit in the last
12 months (18/68 coded 1), then the number of visits in the last
12 months is none, code 00.
If the respondent visited only private medical services in the
last 12 months (18/81-82 coded 07 or 93 or 18/83-84 coded 08; and
18/69-80 and 18/85-94 all coded 00), then the number of visits to
private medical services is the number of visits reported in
18/102-103.
If the respondents did not visit private medical services
only in the last 12 months (18/69-80 and 18/85-94 not all coded
00), then the number of visits to private medical services is the
number of visits reported in 18/107-108.
If 18/81-82 is NOT = 07 or 93, and 18/83-84 is NOT = 08 and
(18/69-80 AND 18/85-94) = 01-06, 09-13, or 94-96, then R did not
use a private doctor for family planning, so code 00.
VAR272 "Family Planning Visits in the Last 12 Months: Clinics"
VAR272 "Family planning visits in the last 12 months: clinics"
If the respondent or her husband was sterile before January 1987
(18/56 coded 1), or she has never had intercourse (since first
period) (17/56 coded 2), or she received a pregnancy test only at
her first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), visits in the
last 12 months is not applicable, code blank.
If the respondent has not had a family planning visit in the last
12 months (18/68 coded 1), then the number of visits in the last
12 months is none, code 00.
If R did not use any clinics in the last 12 months (18/69-80
equal to 01-06, 94,95, or 96), but did use a private source or a
counselor (18/81-94 not all coded 00), then R had no visits to
clinics, code 00.
If the respondent visited only clinics in the last 12 months
(18/69-70 coded 01, 18/71-72 coded 02, 18/73-74 coded 03, 18/75-
76 coded 04, 18/77-78 coded 05, or 18/79-80 coded 06, 94,95 or
96; and 18/81-94 all coded 00), then the number of visits to
clinics is the number of visits reported in 18/102-103.
If the respondent did not visit clinics only the last 12 months,
(18/81-94 not all coded 00), then the number of visits to clinics
is the number of visits reported in 18/105-106.
VAR274 "Family Planning Visits in Last 12 Months: Counselors"
VAR274 "Family planning visits in the last 12 months:
counselors"
If the respondent or her husband was sterile before Jane 1987
(18/56 coded 1), or she has never had intercourse (since first
period) (17/56 coded 2), or she received a pregnancy test only at
her first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), visits in the
last 12 months is not applicable, code blank.
If the respondent has not had a family planning visit in the last
12 months (18/68 coded 1), then the number of visits in the last
12 months is none, code 00.
If R did not use any counselors in the last 12 months (18/85-94
not equal to 09-13), but did use a private doctor or clinic
(18/69-84 not all coded 00), then she had no visits to
counselors, code 00.
If the respondent visited only counselors in the last 12 months
(18/85-86 coded 09, 18/87-88 coded 10, 18/89-90 coded 11, 18/91-
92 coded 12, or 18/93-94 coded 13; and 18/69-84 all coded 00),
then the number of visits to couselors is the number reported in
18/102-103.
If the respondent did not visit counselors only in the last 12
months (18/69-84 not all coded 00), then the number of visits to
counselors is the total number of visits (18/102-103) minus the
sum of the number of visits to clinics (18/105-106) and the
number of visits to private doctors (18/107-108).
VAR276 "Family Planning Visits in Last 12 Months" (FPYRTOT)
VAR276 "Family planning visits in the last 12 months" (FPYRTOT)
If the respondent or her husband was sterile before January 1987
(18/56 coded 1), or she has never had intercourse (since first
period) (17/56 coded 2), or she received a pregnancy test only at
her first visit (20/44 coded 1), and reported no second visit for
family planning services (20/45-48 coded 9696), visits in the
last 12 months is not applicable, code blank.
If the respondent has not had a family planning visit in the last
12 months (18/68 coded 1), then the number of visits in the last
12 months is none, code 00.
If the respondent has had one or more visits in the last year
(18/68 coded 2) then the number of visits is in location 18/102-
103.
VAR280 "Pap Smear in the Last 12 Months" (PAPSMEAR)
VAR280 "Pap smear in the last 12 months" (PAPSMEAR)
If the respondent or her husband was sterile before January 1987
(18/56 coded 1), or she has never had intercourse (since first
period) (17/56 coded 2), or she has not had a family planning
visit in the last 12 months (18/68 coded 1), then the data on
auxiliary medical services are in locations 21/100-106.
If the repsondent had a family planning visit in the last 12
months (18/68 coded 2), then the data on auxiliary medical
services are in locations 19/18-31.
If the respondent had a pap smear during a visit for family
planning services (19/18 coded 1), then code 1.
If the respondent had a pap smear During a general check-up or
other medical visit (19/19 coded 1 and 19/18 coded 2,7,8, or 9;
or 21/100 coded 1), then code 2.
If the respondent did not have a pap smear during a family
planning visit, a check-up or other medical visit (19/19 or
21/100 coded 2), then code 3.
Code categories:
1 = Had a pap smear during a family planning visit in the
last 12 months
2 = Had a pap smear during a general check-up or other
medical visit in the last 12 months
3 = Did not have a pap smear during the last 12 months.
Note: Variables 281 through 286, regarding other medical exams
and tests, were created in the same way.
VAR288 "Infertility Services: Drugs to Make R Ovulate" (OVULATE)
VAR288 "Infertility services: drugs to make R ovulate"
(OVULATE)
No reoode needed. Transfer from 18/21-22.
Note: Variables 289 through 297, regarding other infertility
services, were created in the same way. That is, no recode was
needed and the item was directly transferred.
VAR298 "Source of Most Recent Infertility Services" (INFSRC)
VAR298 "Source of most recent infertility services" (INFSRC)
No recode needed. Transfer from 18/45-46.
VAR705 "Ever Been Treated for PID" (PIDTREAT)
VAR705 "Ever been treated for PID" (PIDTREAT)
No recede needed. Transfer from 20/80.
VAR714 "Ever Heard of Genital Herpes" (KNOWHERP)
VAR714 "Ever heard of genital herpes" (KNOWHERP)
No recode needed. Transfer from 20/100.
VAR720 "Chances of Getting Genital Herpes" (GETHERP)
VAR72O "Chances of getting genital herpes" (GETHERP)
No recode needed. Transfer from 20/118.
VAR722 "Ever Heard of Chlamydia" (KNOWCLMY)
VAR722 "Ever heard of chlamydia" (KNOWCLMY)
No recode needed. Transfer from 20/119.
VAR726 "Chances of Getting Chlamydia (Again)" (GETCLMY)
VAR726 "Chances of getting chlamydia (again)" (GETCLMY)
No recode needed. Transfer from 21/32.
VAR728 "Ever Heard of AIDS or AIDS Virus" (KNOWAIDS)
VAR728 "Ever heard of AIDS or AIDS virus" (KNOWAIDS)
No recode needed. Transfer from 21/33.
VAR730 "Activ Which Person Can Get AIDS:Shaking Hands/Hugging"
VAR730 "Activities from which person can get AIDS: shaking
hands or hugging" (HUG)
No recede needed. Transfer from 21/34-35.
Note: Variables 731 through 738, regarding other activities in
which a person can or cannot get AIDS, were created in the same
way. That is, no recode was needed and the item was family
transferred.
VAR740 "Getting AIDS From Someone With Virus But Not Disease"
VAR740 "Whether it is possible to get AIDS from someone who has
the AIDS virus but who does not have the disease" (VIRUS)
No recede needed. Transfer from 21/52.
Note: For this variable, "don't know" responses are retained.
Only "not ascertained" is imputed.
VAR745 "Chances of Getting AIDS" (GETAIDS)
VAR745 "Chances of getting AIDS" (GETAIDS)
No recede needed. Transfer from 21/53.
VAR750 "Contraceptives Used to Avoid STDs" (STDMETH)
VAR750 "Contraceptives used to avoid STDs" (STDMETH)
If R has never had sexual intercourse (since first period) (21/54
coded 2), then use of contraceptives to avoid sexually
transmitted diseases is inapplicable, code blank.
If R has used a condom to avoid getting sexually transmitted
diseases (21-55 coded 1), code 1.
If R has used contraceptive methods other than the condom to
avoid getting sexually transmitted disease (21/55 coded 0 and
21/56 coded 2 or 21/57=3 or 21/58=4), code 2.
If R has not used any methods for this purpose, (21/59 coded 5),
code 3.
Code categories:
1 = Used a condom to avoid getting sexually transmitted
disease
2 = Used a diaphragm, spermicide jelly, foam or cream or
sponge to avoid getting sexually transmitted disease
3 = Did not use any methods to avoid getting sexually
transmitted diseases
VAR755 "Contraceptives Used to Avoid AIDS" (AIDSMETH)
VAR755 "Contraceptives used to avoid AIDS" (AIDSMETH)
If R has never had sexual interocurse (since first period), or R
has used no method for protection against disease (21/54=2 or
21/59=2) or R has never heard of AIDS (21/60 coded 2), then use
of contraceptives to avoid AIDS is inapplicable, code blank.
If R has used a condom to avoid getting AIDS (21/61 coded 1),
code 1.
If R has used contraceptive methods other than the condom to
avoid getting AIDS (21/61 coded 0 and (21/62=3 or 21/64 coded 4),
code 2.
If R has not used any methods for this purpose, (21/65 coded 5),
code 3.
Code categories:
1 = Used a condom to avoid getting AIDS
2 = Used a diaphragm, spermicide jelly, foam, cream, or
sponge to avoid getting AIDS
3 = Did not use any methods to avoid getting AIDS
VAR511 "Interval Btwn 1st Intercourse & First Marriage" (SEX1FOR
VAR511 "Interval between first intercourse (after first
menstrual period) and first formal marriage (or interview)"
(SEX1FOR)
If the respondent never had intercourse (09/103 coded 2) or never
had intercourse after her first sexual period (09/117-120
coded 9595), then SFX1FOR does not apply, code blank.
If the respondent has had intercourse (09/102 coded 2 or 09/103
coded 1), then SEX1FOR is the century month of the end of the
interval minus the century month of first intercourse (VAR540,
DATESEX1). The end of the interval is defined as follows:
If the respondent has never been formaly married (VAR916,
FMARITAL coded 6), then the end of the interval is the
century month of interview (03/25-30).
If the respondent has ever been formally married (VAR916,
FMARITAL coded 1, 3, 4, or 5), then the end of the
interval is the century month of first formal marriage
(VAR976, FMAR1MO).
If century month of first intercourse was after century month of
first marriage (negative interval), code 996.
VAR514 "Age at First Formal Marriage" (FMAR1AGE)
VAR514 "Age at first formal marriage" (FMAR1AGE)
If the respondent has never been married (VAR916, FMARITAL coded
6), then FMAR1AGE does not apply, code blank.
If the respondent has been married (VAR916, FMARITAL coded 1, 3,
4, or 5), then age at first marriage is the century month of the
first; marriage (VAR976, FMAR1MO) minus the century month of birth
(03/38-43), divided by 12. Keep two decimal places.
VAR518 "Number of Formal Marriages" (FMARNO)
VAR518 "Number of formal marriages" (FMARNO)
If the respondent has never been married (VAR916, FMARITAL coded
6) then FMARNO=0.
If the respondent has been married (VAR916, FMARITAL coded 1, 3,
4, or 5) and:
If she is not currently cohabiting (VAR915, MARITAL coded 1
3, 4, or 5) number of formal marriages is 22/74-75
(codes 01-06).
If she is currently cohabiting (VAR915, MARITAL coded 2),
number of formal marriages is 22/76 (codes 1-6). Use 2
columns, i.e., 01-06.
VAR524 "Century Mo of Dissolution of 1st Marriage" (DISFIRST)
VAR524 "Century month of dissolution of first formal marriage"
(DISFIRST)
If the respondent has never been married (VAR916, FMARITAL coded
6) then DISFIRST does not apply, code blank.
If the respondent has been married only once (VAR518, FMARNO
coded 1) and if that marriage is intact (VAR916, FMARITAL coded
1), then DISFIRST does not apply, code blank.
If the respondent has been married only once (VAR518, FMARNO
coded 1) and if that marriage is not intact (VAR916, FMARITAL
coded 3-5), or if the respondent has been married more than once
(VAR518, FMARNO coded 2-6) then DISFIRST is:
23/33-36, date of death, if 23/32 is coded 1, death of
huaband
23/37-40, date of separation, if 23/32 is coded 2, divorce
or annulment,
23/45-48, date of separation, if 23/32 is coded 3,
separation
If dates are not reported, code DISFIRST = 9999 and impute.
VAR525 "Interval Between 1st Marriage & Dissolution of Marriage"
VAR525 "Interval between first formal marriage and dissolution
of marriage (or interview)" (MAR1DISS)
If the respondent has never been married (VAR916, FMARITAL coded
6) then MAR1DISS does not apply, code blank.
If the respondent has been married at least once (VAR518, FMARNO
coded 1-6) and the first marriage has been dissolved (23/32 coded
1, 2, 3, 7, 8, or 9), then MAR1DISS is the century month of
dissolution (VAR524, DISFIRST) minus the century month of
marriage (VAR976, FMAR1MO).
If the respondent's first marriage is intact (VAR518, FMARNO
coded 1 and VAR916, FMARITAL coded 1), then MAR1DISS is the
century month of interview (03/25-30) minus the month of
marriage (VAR976, FMAR1MO).
VAR526 "Age at Dissolution of First Formal Marriage" (AGEDISS)
VAR526 "Age at dissolution of first formal marriage" (AGEDISS)
If the respondent has never been formally married (FMARITAL coded
6) or if the respondent's first marriage is intact (VAR518,
FMARNO coded 1 and VAR916, FMARITAL coded 1), then AGEDISS does
not apply, code blank.
AGEDISS is the century month of dissolution of first marriage
(VAR524, DISFIRST), minus the century month of the respondent's
date of birth (03/38-43), divided by 12. Keep two deciaal
places.
VAR529 "Century Month of Second Formal Marriage" (MAR2MO)
VAR529 "Century month of second formal marriage" (MAR2MO)
If the respondent has never been married (VAR916, FMARITAL coded
6) or has been married only once (VAR518, FMARNO coded 1) then
date of second marriage does not apply, code blank.
If the respondent has been married twice (VAR518, FMARNO coded 2)
and her second marriage is intact (VAR916, FMARITAL coded 1) then
date of second marriage is 22/78-83.
If the respondent has been married twice (VAR518, FMARNO coded 2)
and her second marriage is not intact (VAR916, FMARITAL coded 3-
5), or if the respondent has been married more than twice
(VAR518, FMARNO coded 3-6), then date of second marriage is
23/49-54.
If date of second marriage is missing, code MAR2MO = 9999 and
impute.
VAR530 "Interval Btwn Divorce or Death & Remarriage" (DIS1MAR)
VAR530 "Interval between divorce or death (first formal
marriage) and remarriage (or interview)" (DIS1MAR)
If the respondent has never been married (VAR916, FMARITAL coded
6), or if her first marriage is intact (VAR518, FMARNO coded 1
and VAR916, FMARITAL coded 1), or if her first marriage ended in
separation only (VAR518, FMARNO coded 1 and VAR916, FMARITAL
coded 5) then DIS1MAR does not apply, code blank.
If the respondent's first marriage ended in widowhood or divorce
(or annulment) (23/32 coded 1 or 2) and the respondent remarried
(VAR518, FMARNO coded 2-6), then DIS1MAR is the century month of
the second marriage (VAR529, MAR2MO) minus:
the century month that the first marriage ended in widowhood
(23/33-36, date of death), if 23/32 is coded 1, death
of husband
the century month that the first marriage ended in divorce
(23/41-44, date of divorce), if 23/32 is coded 2,
divorce or annulment
If the respondent's first marriage ended in widowhood or divorce
(or annulment) (23/32 coded 1 or 2) and the respondent did not
remarry (VAR518, FMARNO coded 1) then DIS1MAR is date of
interview (03/25-30) minus:
the century month that the first marriage ended in widowhood
(23/33-36, date of death), if 23/32 is coded 1, death
of husband
the century month that the first marriage ended in divorce
(23/41-44, date of divorce), if 23/32 is coded 2,
divorce or annulment
VAR535 "Age at Divorce or Death: 1st Formal Marriage" (AGEDD1)
VAR535 "Age at divorce or death: 1st formal marriage" (AGEDD1)
If the respondent has never been married (VAR916, FMARITAL coded
6), or if her first formal marriage is intact (VAR518, FMARNO
coded 1 and VAR916, FMARITAL coded 1), or her first marriage was
dissolved by separation only (VAR518, FMARNO coded 1 and VAR916,
FMARITAL coded 5), then AGEDD1 does not apply, code blank.
If the respondent's first marriage ended in widowhood or divorce
(or annulment) (23/32 coded 1 or 2), AGEDD1 is computed as the
century month that the first marriage ended in widowhood (23/33-
36, date of death, if 23/32 is coded 1, death of husband) or
divorce (23/41-44, date of divorce, if 23/32 is coded 2, divorce
or annulment) minus the century month of the respondent's date of
birth (03/38-43), divided by 12. Keep two decimal places.
VAR550 "Century Month of First Cohabitation" (COHAB1)
VAR550 "Century month of first cohabitation" (COHAB1)
If the respondent has never cohabited (VAR915, MARITAL not coded
2, and 22/84, 23/24, and 23/103 coded blank or 2) then COHAB1
does not apply, code blank.
If the respondent has cohabited (VAR915, MARITAL coded 2, or
22/84 coded 1, or 23/24 coded 1, or 23/103 coded 1), then COHAB1
is the earliest of 22/85-88, 23/25-28, 23/96-99 and 23/104-107.
If dates of cohabitation are missing in 22/85-88, 23/25-28, or
23/96-99, estimate century month of cohabitation using length of
cohabitation before marriage (22/78-83 minus 22/89-91, 23/18-23
minus 23/29-31), or length of cohabitation before interview
(03/25-30 minus 23/1OO-102). Then check for earliest
cohabitation substituting estates for missing dates.
VAR551 "Length of First Cohabitation Interval" (COHABINT)
VAR551 "Length of first cohabitation interval" (COHABINT)
If the respondent has never cohabited (VAR552, COHSTAT coded 1)
then COHABINT does not apply, code blank.
If the respondent has cohabited (VAR552, COHSTAT coded 2 or 3),
and:
if the earliest cohabitation date is in 22/85-88, then the
length of first cohabitation is century month of
marriage (22/78-83) minus century month of first
cohabitation (VAR550, COHAB1)
if the earliest cohabitation date is in 23/25-28, then the
length of first cohabitation is century month of
marriage (23/18-23) minus century month of first
cohabitation (VAR550, COHAB1)
if the earliest cohabitation date is in 23/104-107, then the
length of first cohabitation is 23/108-110
if the earliest cohabitation date is in 23/96-99, then the
length of first cohabitation interval is century month
of interview (03/25-30) minus century month of first
cohabitation (VAR550, COHAB1)
VAR552 "Cohabitational Status" (COHSTAT)
VAR552 "Cohabitational status" (COHSTAT)
If the respondent has never cohabited (22/84, 23/24, and 23/103
coded blank or 2; and VAR915, MARITAL not coded 2), then code 1.
If the respondent has never been married (VAR916, FMARITAL coded
6) and has cohabited (VAR915, MARITAL coded 2 or 23/103 coded 1),
then code 2.
If the respondent has been married (VAR916, FMARITAL coded 1, 3,
4, or 5), and has cohabited (VAR915, MARITAL coded 2, or 22/84
coded 1, or 23/24 coded 1, or 23/103 coded 1) and:
if century month of first cohabitation (VAR550, COHAB1) is
the same as or earlier than century month of first
marriage (VAR976, FMAR1MO), then code 2.
if century month of first cohabitation (VAR550, COHAB1) is
later than century month of first marriage (VAR976,
FMAR1MO), then code 3.
VAR553 "Outcome of First Cohabitation" (COHOUT)
VAR553 "Outcome of first cohabitation" (COHOUT)
If the respondent has never cohabited, (22/84, 23/24, and 23/103
coded blank or 2; and VAR915, MARITAL not coded 2), then COHOUT
does not apply, code blank.
If the respondent's first cohabitation is intact (VAR550, COHAB1
comes from 23/96-102), code 1.
If the outcome of the respondent's first cohabitation is an
intact marriage (VAR550, COHAB1 comes from 22/85-91), code 2.
If the outcome of the respondent's first cohabitation is a
marriage that dissolved (VAR550, COHAB1 comes from 23/25-31),
code 3.
If the outcome of the respondent's first cohabitation is
dissolution without marriage (VAR550, COHAB1 comes from 23/104-
110), code 4.
VAR554 "Century Month of First Union" (UNION1)
VAR554 "Century month of first union" (UNION1)
If the respondent has never been married (VAR916, FMARITAL coded
6) and never cohabited (VAR552, COHSTAT coded 1), then UNION1
does not apply, code blank.
If the respondent has been married (VAR916, FMARITAL coded 1, 3,
4, or 5), and/or has cohabited (VAR552, COHSTAT coded 2 or 3),
then UNION1 is the earlier date of var550, COHAB1 or VAR976,
VAR555 "Type and Outcome of First Union" (UNTYPE)
VAR555 "Type and outcome of first union" (UNTYPE)
If the respondent has never been married and never cohabited
(UNION1 coded blank), then UNTYPE does not apply, code blank.
If the respondent's first union was a cohabitation that is still
intact (VAR554, UNION1 comes from 23/96-102), code 1.
If the respondent's first union was a cohabitation that rssulted
in an intact marriage (VAR554, UNION1 comes from 22/85-91), code
2.
If the respondent's first union was a cohabitation that ended in
a marriage that was dissolved (VAR554, UNION1 comes from 23/25-
31), code 3.
If the respondent's first union was a cohabitation that was
dissolved (VAR554, UNION1 comes from 23/104-110), code 4.
If the respondent's first union was a marriage that is still
intact (VAR554, UNION1 comes from 22/78-83), code 5.
If the respondent's first union was a marriage that was dissolved
(VAR554, UNION1 comes from 23/18-23), code 6.
VAR556 "Duration of First Union" (UNIONINT)
VAR556 "Duration of first union" (UNIONINT)
If the respondent has never been married and never cohabited
(UNION1 coded blank), then UNTYPE does not apply, code blank.
If VAR555, UNTYPE eaquals 1, 2, or 5, duration of first union is
calculated as the interview date (03/25-30) minus VAR554, UNION1.
If VAR555, UNTYPE equals 3 or 6, duration of first union is
calculated as VAR524, DISFIRST minus VAR554, UNION1.
If VAR555, UNTYPEl equals 4, duration of first union equals
VAR551, COHABINT.
VAR916 "Formal Marital Status" (FMARITAL)
VAR916 "Formal marital status" (FMARITAL)
If the respondent is currently married, widowed, divorced,
separated, or never married (MARITAL coded 1, 3, 4, 5, or 6),
then FMARITAL=MARITAL.
If the repondsent is not married but living with a partner or
boyfriend (MARITAL=2), then FMARITAL = 03/37.
VAR922 "Hispanic Origin" (HISPANIC)
VAR922 "Hispanic origin" (HISPANIC)
If the respondent's only reported national origin is Puerto
Rican, Cuban, Mexican American, Central or South American, or
other Spanish (22/70 coded 2; and 22/54-55 coded 9, 22/56-57
coded 10, 22/58-59 coded 11, 22/60-61 coded 12, or 22/62-63 coded
13), or if the national origin which she says best describes her
ancestry is Puerto Rican, Cuban, Mexican American, Central or
South American, or other Spanish (22/71-72 coded 9, 10, 11, 12,
or 13) then she is Hispanic, code 1.
If the respondent gives a non-Hispanic origin as her only origin
(22/70 coded 2; and 22/38-39 coded 1 or 22/40-41 coded 2 or
22/42-43 coded 3 or 22/44-45 coded 4 or 22/46-47 coded 5 or
22/48-49 coded 6 or 22/50-51 coded 7 or 22/52-53 coded 8 or
22/64-65 coded 14 or 22/66-67 coded 15 or 22/68-69 coded 16, 17,
or 18) or that which best describes her ancestry (22/71-72 coded
1, 2, 3, 4, 5, 6, 7, 8, 14, 15, 16, 17, or 18), then she is
non-Hispanic, code 2.
If the respondent mentioned only one origin or ancestry
(22/70=2), and that origin is in the range 19-44 (22/68-69=19-
44), then she is non-Hispanic, code 2.
If the respondent mentioned more than one origin (22/70 NE 2 and
22/71-72 NE blank), and 22/71-72=19-44, then she is non-Hispanic,
code 2.
VAR935 "Religious Affiliation" (RELIGION)
VAR935 "Religious affiliation" (RELIGION)
No recode needed. Transferred from (22/25).
VAR940 "Poverty Level Income" (POVERTY)
VAR940 "Poverty level income" (POVERTY)
Poverty level income is the respondent's family income divided by
the official poverty threshold for a family the size of her
family, expressed as a percent. If the value is 998 or greater,
set = 998.
For this recode an exact family income is estimated by the
midpoint of the reported range of family income (27/59-60) as
follows: 01=2000, 02=3750, 03=5500, 04=6500, 05=7500, 06=8500,
07=9500, 08=10500, 09=11500, 10=12500, 11=14000, 12=16000,
13=18500, 14=22500, 15=30000, 16=42500, 17=55000.
If the respondent is either person 01 or is related to Person 01
(02/56 coded 1, 2, 3, 4, 5, or 6), then her family size is the
number of people living in the household (01/71-72), minus the
number who are unrelated to Person 01 (i.e., the number coded 7
or 8 in 02/56).
If the respondent is not related to Person 01 (02/56 coded 7 or
8), or if her relationship to person 01 was not ascertained
(02/56 coded 9), then her family size is the count of the
following persons: herself; her husband, if she is married
(VAR915, MARITAL coded 1); and each of her children living in the
household (07/45 coded 1). In addition, if the respondent is
under age 25 (VAR905, AGE coded 15-24), add 1 for known adult
relatives in her household (i.e., add 1 if 01/79 coded 2, 3, or
7; add 2 if 01/79 coded 1, 5, 6, 8).
The poverty thresholds for each family size are:
Family Size Threshold
1 5,778
2 7,397
3 9,056
4 11,611
5 13,737
6 15,509
7 17,649
8 19,515
9 or nore 23,105
The thresholds were published in: U.S. Bureau of the Census,
Current Population Reports, Series P-60, No. 163, Poverty in the
United States, 1987, Washington, D.C., 1989.
VAR950 "Labor Force Status" (LABORFOR)
VAR950 "Labor force status" (LABORFOR)
Code VAR950 as the lowest code (excluding 00) in 25/19-20 through
25/33-34.
VAR955 "Place of Residence (Metropolitan-Nonmetropolitan)"(METRO
VAR955 "Place of residence (metropolitan-nonmetropolitan)"
(METRO)
As of the 1980 Census.
1=SMSA, central city
2=SMSA, other
3=Not SMSA
VAR956 "Urban-Rural Residence" (RURAL)
VAR956 "Urban-rural residence" (RURAL)
As of the 1980 Census.
1=Urban
2-Rural
Note: For this variable, the majoriry of cases were coded by a
subcontractor, Polk, but Polk was unable to match some
respondents' addresses to 1980 Census data. For the problem
cases, urban/rural codes were taken frsm the National Health
Interview Survey (NHIS); this means that if the respondent moved
between the NHIS and the NSFG, VAR956 refers to her former
address rather than her current address. A variable, RURALFLG
has been created showing the source of the urban/rural code: Polk
or NHIS. This variable appears in tape location 2498.
VAR970 "Years Since First Marriage" (MARR1/NOW)
VAR970 "Years since first marriage" (MARR1/NOW)
If the respondent has never been married (VAR916, FMARITAL coded
6), then MAR1/NOW does not apply, code blank.
If the respondent has been marrried (VAR916, FMARITAL coded 1, 3,
4, or 5), then MAR1NOW is the century month of interview (03/25-
30) minus century month of first marriage (VAR976, FMAR1MO),
divided by 12 and truncated to an integer.
VAR976 "Century Month of First Formal Marriage" (FMAR1MO)
VAR976 "Century month of first formal marriage" (FMAR1MO)
If the respondent has never been married (VAR916, FMARITAL coded
6), then FMAR1MO does not apply, code blank.
If the respondent has been married once (VAR518, FMARNO coded 1)
and if that marriage is currently intact (VAR916, FMARITAL coded
1), then FMAR1MO is 22/78-83.
If the respondent has been married once and that marriage is not
intact (VAR518, FMARNO coded 1 and VAR916, FMARITAL coded 3, 4,
or 5) or if she has been married more than once (VAR518, FMARNO
coded 2-6), then FMAR1MO is 23/18-23.
VAR911 "Race" (RACE)
VAR911 "Race" (RACE)
If the respondent reports only one race (22/36 coded 2) and
reports that:
she is black (22/33=3), then RACE=1.
she is white (22/34=4), then RACE=2.
she is some other race (22/31=1 or 22/32=2 or 22/35=5), then
RACE=3.
If the respondent reports more than one race (22/36 coded 1), and
in 22/37 reports that the race that best describes her is:
black (22/37=3), then RACE=1.
white (22/37=4), then RACE=2.
some other race (22/37=1, 2, or 5), then RACE=3.
If the respondent does not report her race, 22/31-35=7, 8, or 9,
then use race by interviewer observation (22/18).
VAR557 "Age at Beginning of First Cohabitation" (COHAGEB)
VAR557 "Age at the beginning of first cohabitation" (COHAGEB)
If COHAB1 = 9999, then COHAGEB = 9999.
If COHAB1 = blank, then COHAGEB = blank.
Otherwise, COHAGEB = (COHAB1 minus the respondent's date of birth
(03/38-43)) divided by 12. Keep 2 decimal places.
VAR558 "Age at the End of First Cohabitation" (COHAGEE)
VAR558 "Age at the end of first cohabitation" (COHAGEE)
If COHAB1 = 99999 or COHABINT = 999, then COHAGEE = 9999.
If COHAB1 = blank, then COHAGEE = blank.
Otherwise, COHAGEE = (COHAB1 plus COHABINT minus the respondent's
date of birth (03/38-43)) divided by 12. Keep 2 decimal places.
4VAR907 "Age at First Interview in 100ths of Year" (AGE100)
VAR907 "Age at first interview in 100ths of year" (AGE100)
AGE100 = (date of interview (03/25-30) minus respondent's date of
birth (03/38-43)) divided by 12. Keep 2 demical places.
VAR967 "Age at 1st Intercourse in 100ths of Year" (SEX1HUND)
VAR967 "Age at first intercourse (after first menstrual period)
in 100ths of year" (SEX1HUND)
If DATESEX1 = 9999, then SEX1HUND = 9999.
If DATESEX1 is not blank not 9595, then SEXHUND = (DATESEX1
minus respondent's date of birth (03/38-43)) divided by 12. Keep
2 decinal places.
VAR329 "Currently Pregnant"
VAR329 "Currently pregnant"
No recode needed. Transfer from 05/91.
VAR460 "Age at Most Recent Live Birth in 100ths of Year" (NEWKID
VAR460 "Age at most recent live birth in 100ths of year"
(NEWKID)
Find the most recent live birth by identifying and counting up
each live birth (06/16-17 = 01, 05, 07). Most recent live birth
is when the count of live births equals COUNT07 (05/87-88).
NEWKID = (date of that birth (06/23-28) minus the respondent's
date of birth (03/38-43)) divided by 12. Keep 2 decimal places.
VAR156 "Ever Used Method Requiring Medical Intervention"(MEDMTHD
VAR156 "Ever used a method requiring medical intervention"
(MEDMTHD)
Check the following:
PILL IUD DIAPHRAGM FEMSTER
(VAR120) (VAR134) (VAR130) (VAR136)
CODE
2 2 2 2 00
2 2 2 1 01
2 2 1 2 02
2 2 1 1 03
2 1 2 2 04
2 1 2 1 05
2 1 1 2 06
2 1 1 1 07
1 2 2 2 08
1 2 2 1 09
1 2 1 2 10
1 2 1 1 11
1 1 2 2 12
1 1 2 1 13
1 1 1 2 14
1 1 1 1 15
VAR559 "Ever Cohabited" (COHEVER)
VAR559 "Ever cohabited" (COHEVER)
If COHAB1 = blank, COHEVER = 2.
If COHAB1 = 99999 AND ((FMARITAL = 7, 8, or 9) OR (F16 = 7, 8, or
9) OR (F20M1 = 7, 8, or 9) OR (F30 = 7, 8, or 9)) COHEVER = 9.
Otherwise, COHEVER = 1.
VAR299 "Ever Had Infertility Services" (INFEVER)
VAR299 "Ever had infertility services" (INFEVER)
If IFFSRC = 99 AND ((17/56 = 7, 8, or 9) OR (18/18 = 2 AND 18/19
= 7, 8, or 9) OR (18/18 = 7, 8, or 9 AND 18/19 = 7, 8, or 9)),
then INFEVER = 9.
Else if INFSRC is not equal to blank, INFEVER = 1.
Otherwise, INFEVER = 2.
VAR925 "Geographic Region" (REGION)
VAR925 "Geographic region" (REGION)
If the respondent lives in Maine, New Hampshire, Vermont,
Massachusetts, Rhode Island, Connecticut, New York, New Jersey,
or Pennsylvania, then she lives in the Northeast, code 1.
If the respondent lives in Delaware, Maryland, D.C., Virginia,
West Virginia, North Carolina, South Carolina, Georgia, Florida,
Kentucky, Tennessee, Alabama, Mississippi, Arkansas, Louisiana,
Oklahoma, or Texas, then she lives in the South, code 2.
If the respondent lives in Ohio, Indiana, Illinois, Michigan,
Wisconsin, Minnesota, Iowa, Missouri, North Dakota, South Dakota,
Nebraska, or Kansas, then she lives in the Midwest, code 3.
If the respondent lives, in Montana, Idaho, Wyoming, Colorado, New
Mexico, Arizona, Utah, Nevada, Washington, Oregon, California,
Alaska, or Hawaii, then, she lives in the West, code 4.
VAR519 "Intercourse in the Last 3 Months" (SEXLMO)
VAR519 "Intercourse in the last 3 months" (SEXLMO)
If R has never had intercourse (17/56=2), then SEXL3MO = Blank.
If R has never been pregnant and has not had intercourse for the
second time (11/18-21=9595), then
if interview date (R-7) minus date of first intercourse
(VAR540) LE 3, then she has had intercourse in the last
3 months, so SEXL3MO=1.
if interview date (R-7) minus date of first intercourse
(VAR540) GT 3, then she has not had intercourse in the
last 3 months, so SEXL3MO=2.
If R is currently pregnant (05/91=1), and R had periods of
nonintercourse during the interval for the last pregnancy
(10/19=1 AND 06/80=1), then the dates of nonintercourse are in
10/20-10/43.
If R is not currently pregnant (05/91=2):
if R has never been pregnant (05/92=2), and R has had
periods of nonintercourse (11/18-21 NE 9595 or 9696),
then dates of nonintercourse are in 11/19-41.
if R has been pregnant (05/92=1), and R has had periods
of nonintercourse since the last pregnancy (11/42=1),
then dates of nonintercourse are in 11/43-66.
If R has had no periods of nonintercourse (10/19=2 if currently
pregnant; 11/18-21=9696 if never pregnant; or 11/42=2 if ever
pregnant), then she has had intercourse in the last 3 months, so
SEXL3MO=1.
If the ending date of the period of nonintercourse (10/24-27 or
32-35 or 40-43; OR 11/22-25 or 30-33 or 38-41; or 11/47-50 or 55-
58 or 63-66) equals the date of interview (R-7), then:
if the ending date minus the beginning date = 0 to 3
months, then R has had intercourse in the last 3
months, so SEXL3MO=1.
if the ending date minus the beginning date is greater
than 3 months, then R has not had intercourse in the
last 3 months, so SEL3MO=2.
If the ending date of the last period of nonintercourse (see
locations in step 6) is NOT equal to the date of interview (R-7,
TL 2149-2153), then R has had intercourse in the last 3 months,
and SEXL3MO=1.
Interval file recode specifications
Interval File Recode Specification
VAR341 "Duration of Pregnancy in Months" (PRGLNGTH)
VAR341 "Duration of pregnancy in months" (PRGLNGTH)
If 06/29-30 is coded 01-43, divide by 4.3 and keep one decimal
place. If 06/29-30 is coded 97,98, or 99, and:
If 06/31 eq 1, code=2.0
If 06/31 eq 2, code=4.0
If 06/31 eq 3, and 06/16-17 eq 03, code=7.0
If 06/31 eq 3, and 06/16-17 eq 04, code=8.0
If 06/31 eq 3, and 06/16-17 eq 01, code=9.0
If 06/31 eq 3, and 06/16-17 eq 05, code=7.0
If 06/31 eq 3, and 06/16-17 eq 07, code=7.0
If respondent was currently pregnant at the time of the interview
(06/29-30 ne 01-43, 97,98, or 99; ie., 06/29-30 coded blank),
PRGLNGTH interview date (03/25-30) minus date of conception
(10/89-92).
VAR991 "Age at Pregnancy Outcome" (AGEPREG)
VAR991 "Age at pregnancy outcome" (AGEPREG)
AGEPREG is computed as the date the pregnancy ended (06/23-28),
minus the respondent's date of birth (03/38-43), divided by 12.
Keep 2 decimal places.
NOTE: If an analyst wants to use age in completed years as an
independent variable, he/she can use the first two columns of
this variable to do so. The 2 places after the decimal point can
be used for computing mean ages.
If the date is 9797,9898, or 9999, AGEPREG is not ascertained,
impute.
VAR426 "Wantedness of Pregnancy - Respondent" (WANTWIFE)
VAR426 "Wantedness of pregnancy - Respondent" (WANTWIFE)
Note: this recode is based on questions C-21, 22, and 23.
If the respondent became pregnant later than she wanted to get
pregnant (10/97=2), then the pregnancy was overdue, so
WANTWIFE=1.
If the respondent became pregnant at about the right time (10/97
3), then the pregnancy occurred at the right time, so
WANTWIFE=2.
If the respondent wanted the pregnancy eventually, but became
pregnant sooner than she wanted to become pregnant (10/97=1),
then the pregnancy was mistimed, so WANTWIFE=3.
If the respondent wanted the pregnancy and didn't care when it
occurred (10/97=4), then the respondent was indifferent, so
WANTWIFE=4.
If the respondent did not want to have that pregnancy ever
(10/95=2 or 10/96=2), then the pregnancy was unwanted, so
WANTWIFE=5.
If the respondent didn't know or didn't remember and probably
didn't care about whether she wanted the pregnancy (10/96=3 or
8), then wantedness is undetermined, so WANTWIFE=6.
Missing data, code WANTWIFE = 9 and impute.
NOTE: Variables 428-452 are respondent file recodes that
are based on VAR426.
4VAR427 "Wantedness of Pregnancy - Partner" (WANTMAN)
VAR427 "Wantedness of pregnancy--partner" (WANTMAN)
If R became pregnant later than her partner wanted her to become
pregnant (10/99=2), then he thought that the pregnancy was
overdeu, so WANTMAN=1
If R became pregnant at about the time her partner wanted her to
become pregnant (10/99=3), then he thought that the pregnancy was
on time, so WANTMAN=2.
If R became pregnant sooner than her partner wanted her to become
pregnant (10/99=1), then he thought the pregnant was mistimed,
so WANTMANT=3.
If her partner wanted the pregnancy and didn't care about its
timing (10/99=4), then he was indifferent, so WANTMAN=4.
If her partner did not want the pregnancy (10/98=2), then it was
unwanted, so WANTMAN=5
If she didn't know or didn't remember whether her partner wanted
the pregnancy (10/98=8), then its wantedness was undetermined, so
WANTMAN=6.
Missing data, code WANTMAN and impute.
VAR994 "Pregnancy Outcome" (OUTCOME)
VAR994 "Pregnancy outcome" (OUTCOME)
This recode assigns a single outcome code to each pregnancy, even
if the pregnancy had multiple outcomes.
If the pregnancy outcomes included a live birth (06/16-17 coded
01,05,07), it is a live birth, so OUTCOME=1.
If the pregnancy outcomes included an induced abortion but no
live births (06/16-17 coded 02 or 06/19 coded 2),it is an induced
abortion, so OUTCOME=2.
If the pregnancy outcomes included a miscarriage but no live
births or induced abortions (06/16-17 coded 03 or 10 or 06/19
coded 3), then the pregnancy was a miscarriage, so OUTCOME=3.
If the pregnancy outcome included only stillbirths (06/16-17
coded 04 or 06/19 coded 4), then the pregnancy was a stillbirth,
so OUTCOME=4.
If the pregnancy is a current pregnancy, OUTCOME=5.
Missing data: 06/16-17 coded 97,98,or 99, impute.
VAR992 "Year Pregnancy Ended" (YRPREG)
VAR992 "Year pregnancy ended" (YRPREG)
Current pregnancies should be coded blank.
This will be a 2 digit code. Assign century month codes to years
in the following way:
Century Month Codes Year Code Value
0685-0840,9690,9702,
9714,9726,9738,9750,
9762,9774,9786,9798,
9810,9822,983 Before 1970 =60
0841-0852,9846 1970 =70
0853-0864,9858 1971 =71
0865-0876,9870 1972 =72
0877-0888,9882 1973 =73
0889-0900,9894 1974 =74
0901-0912,9906 1975 =75
0913-0924,9918 1976 =76
0925-0936,9930 1977 =77
0937-0948,9942 1978 =78
0949-0960,9954 1979 =79
0961-0972,9966 1980 =80
0973-0984,9978 1981 =81
0985-0996,9990 1982 =82
0997-1008,9002 1983 =83
1009-1020,9014 1984 =84
1021-1032,9026 1985 =85
1033-1044,9038 1986 =86
1045-1056,9050 1987 =87
1057-1068,9062 1988 =88
9797,9898,9999 Year not ascertained =99, impute
VAR621 "Formal Marital Status at Pregnancy Outcome" (FMAROUT)
VAR621 "Formal marital status at pregnancy outcome" (FMAROUT)
If R has never formally died (VAR976 blank), then she was
never formally married at this pregnancy outcome, code 1.
If R has ever formally married (VAR976 blank), if the
date the pregnancy ended (06/23-28) is the date
of first formal marriage (VAR976), she was never
married at this pregnancy, code 1.
if the date the pregnancy ended (06/23-28) is GE the
date of first formal marriage (VAR976), she was ever
married at this pregnancy outcome, code 2.
If the pregnancy is a current pregnancy, code blank.
VAR614 "Living Arrangements of First or Only Baby" (LIVBABY1)
VAR614 "Living arrangements of first or only baby" (LIVBABY1)
For each pregnancy not ending in a live birth (06/16-17 NE
01,05,07), code inapplicable=BLANK.
For each pregnancy ending in a live birth (06/16-17 EQ 01,05,07),
code LIVBABY1 for the first or only baby in the pregnancy using
the specifications for VAR613 (LIVCHILD).
VAR615 "Living Arrangements of Second Baby" (LIVBABY2)
VAR615 "Living arrangements of second baby" (LIVBABY2)
Repeat procedures for VAR614 to code living arrangements of the
second baby in pregnancy. If no second baby, code blank.
VAR616 "Living Arrangements of Third Baby" (LIVBABY3)
VAR616 "Living arrangements of third baby" (LIVBABY3)
Repeat procedures for VAR614 to code living arrangements of
the third baby in pregnancy. If no third baby, code blank.
VAR375, VAR376, VAR377 "Low Birthweight" (LOW1, LOW2, LOW3)
VAR375, VAR376, VAR377 "Low birthweight" (LOW1, LOW2, LOW3)
If this pregnancy is not a live birth (04/87-88 00), code
blank.
If baby's weight at birth was less than 5 lbs., 9 ozs., (from
07/19-20 and 07/21-22) low birthweight (LOWEIGHT)=1. If baby's
weight at birth was 5 lbs., 9 ozs., or more, LOWEIGHT=0.
If 07/19-20=97,98, or 99, and if 07/23 eq 1, code=0 (baby weighed
more than 5 1/2 pounds).
If 07/19-20=97, 98, or 99, and if 07/23 eq 2, code=1 (baby weighed
less than 5 1/2 pounds).
VAR372 "Number of Weeks Pregnant at Pregnant Test" (PREGTEST)
VAR372 "Number of weeks pregnant at pregnant test" (PREGTEST)
If the respondent's pregnancy did not end January 1984 or later,
or did not end in a live birth (ie., if 06/32 ne 2), code=blank.
If a pregnancy test was not obtained (ie., 06/33 coded 2),
code=95. Otherwise, use 06/34-35 codes 01-30.
VAR373 "Number of Weeks Pregnant at 1st Prenatal Care" (PNCAREWK
VAR373 "Number of weeks pregnant at first prenatal care"
(PNCAREWK)
If the respondent's pregnancy did not end January 1984 or later,
or did not end in a live birth (ie., if 06/32 ne 2), code=blank.
If respondent reported no prenatal care in 06/38 (code 2), or if
06/36-37 eq 96, code 95, no prenatal care.
If 06/36-37 eq 00-30, compute by adding PREGTEST plus (06/36-37).
Otherwise, use 06/39-40, codes 01-43.
VAR374 "Number of Visits for Prenatal Care" (PNCARENO)
VAR374 "Number of visits for prenatal care" (PNCARENO)
If the respondent's pregnancy did not end January 1984 or later,
or did not end in a live birth (ie., if 06/32 ne 2), code=blank.
If respondent reported no prenatal care in 06/38 (code 2), or if
06/36-37 eq 96, code=00, no prenatal care.
Otherwise, use 06/41-42, coded 01-40.
VAR911 "Race" (RACE)
VAR911 "Race" (RACE)
If the respondent reports only one race (22/36 coded 2) and
reports that:
she is black (22/33=3), then RACE=1.
she is white (22/34=4), then RACE=2.
she is some other race (22/31=1 or 22/32=2 or 22/35=5), then
RACE=3.
If the respondent reports more than one race (22/36 coded 1), and
in 22/37 reports that the race that best describes her is:
black (22/37=3), then RACE=1.
white (22/37=4), then RACE=2.
sane other race (22/37=1, 2, or 5), then RACE=3.
If the respondent does not report her race, 22/31-35=7, 8, or 9,
then use race by interviewer observation (22/18).
Appendix 2 - Country Codes
COUNTRY CODES
110 = Afganistan 487 = Jamaica
120 = Albania 490 = Japan
125 = Algeria 500 = Jordan
150 = Argentina 505 = Kenya
165 = Austria 515 = Korea
160 = Australia 540 = Lebanon
180 = Bahamas 545 = Liberia
182 = Eangladesh 550 = Libya
184 = Barbados 570 = Luxembourg
190 = Belgium 585 = Mali
195 = Bermuda 590 = Malta
205 = Bolivia 595 = Mexico
220 = Brazil 608 = Mongolia
245 = Bulgaria 580 = Malaysia
250 = Burma 607 = Monaco
255 = Cambodia 610 = Morocco
260 = Canada 630 = Netherlands
275 = Chile 665 = Nicaragua
230 = China 670 = Nigeria
281 = Taiwan 685 = Norway
285 = Colombia 660 = New Zealand
290 = Congo 700 = Pakistan
295 = Costa Rica 710 = Panama
300 = Cuba 715 = Paraguay
310 = Czechoslovakia 720 = Peru
315 = Denmark 725 = Philippines
320 = Dominican Republic 730 = Poland
325 = Ecuador 735 = Portugal
922 = Egypt 755 = Rumania
330 = El Salvador 825 = Russia
335 = Ethiopia 830 = Spain
340 = Finland 272 = Sri Lanka
350 = France 835 = Sudan
388 = Gabon 850 = Sweden
394 = Germany 855 = Switzerland
396 = Ghana 858 = Syria
400 = Greece 801 = South Africa
415 = Guatemala 785 = Saudi Arabia
417 = Guinea 865 = Tanzania
418 = Guyana 875 = Thailand
430 = Honduras 887 = Trinidad/Tobago
435 = Hong Kong 890 = Tunisia
420 = Haiti 905 = Turkey
445 = Hungary 926 = U.S.A.
450 = Iceland 930 = Uruguay
455 = India 940 = Venezuela
458 = Indonesia 945 = Viet Nam
470 = Ireland 970 = Yugoslavia
460 = Iran 291 = Zaire
465 = Iraq 990 = Zambia
475 = Israel 925 = United Kingdom
485 = Ivory Coast 995 = Other
480 = Italy
Appendix 3 - Occupation Codes
General Information
Equivalent numeric codes follow the alphabetic code. Either code may be used,
depending on the processing method. Numbers in parenthesis following the
occupation categories are the 1977 Standard Occupational Classification code
equivalents. The abbreviation "pt" means "part" and "n.e.c." means "not
elsewhere classified."
Managerial and Professional Specialty Occupations
Occu-
pation Occupation category
code
MANAGERIAL AND PROFESSIONAL
SPECIALTY OCCUPATIONS
Executive, Administrative, add Managerial
Occupations
003 Legislators (112)
004 Chief executives and general administrators, public
administration (111)
005 Administrators and officials, public administration
(pt 113 and 119, except 1136)
006 Administrators, protective services (pt 113)
007 Financial managers (122)
008 Personnel and labor relations managers (123)
009 Purchasing managers (124)
013 Managers, marketing, advertising, and public relations
(125)
014 Administrators, education and related fields (128)
015 Managers, medicine and health (131)
016 Managers, properties and real estate (1353)
017 Postmasters and mail superintendents (1344)
018 Funeral directors (pt 1359)
019 Managers and administrators, n.e.c, (1136, 121, 126,
127, 132-135, except 1344, 1353, pt 1359)
Management related occupations
023 Accountants and auditors (1412)
024 Underwriters (pt 1419)
025 Other financial officers (pt 1419)
026 Management analysts (142)
027 Personnel, training, and labor relations specialists
(143)
028 Purchasing agents and buyers, farm products (pt 144)
029 Buyers, wholesale arid retail trade, except farm
products (432)
033 Purchasing agents and buyers, n.e.c. (pt 144)
034 Business and promotion agents (145)
035 Construction inspectors (1171,618)
036 Inspectors and compliance officers, exc. construc-
tion (1172, 147)
037 Management related occupations, n.e.c. (149)
Professional Specialty Occupations
043 Architects (15)
Engineers, surveyors and mapping scientists
044 Aerospace engineers (1622)
045 Metallurgical and materials engineers (1623)
046 Mining engineers (1624)
047 Petroleum engineers (1625)
048 Chemical engineers (1626)
049 Nuclear engineers (1627)
053 Civil engineers (1628)
054 Agricultural engineers (1632)
055 Electrical and electronic engineers (1633, 1636)
056 Industrial engineers (1634)
057 Mechanical engineers (1635)
058 Marine engineers and naval architects (1637)
059 Engineers, n.e.c. (1639)
063 Surveyors and mapping scientists (1642)
Mathematical and computer scientists
064 Computer systems analysts and scientists (171)
065 Operations and systems researchers and analysts
(172)
066 Actuaries (1732)
067 Statisticians (1733)
068 Mathematical scientists, n.e.c. (1739)
Natural scientists
069 Physicists and astronomers (1842,1843)
073 Chemists, except bicchemists (1845)
074 Atmospheric and space scientists (1846)
075 Geologists and geodesists (1847)
076 Physical scientists, n.e.c. (1849)
077 Agricultural and food scientists (1853)
078 Biological and life scientists (1854, 1859)
079 Forestry and conservation scientists (1852)
083 Medical scientists (1855)
Health diagnosing occupations
084 Physicians (261)
085 Dentists (26,)
086 Veterinarians (27)
087 Optometrists (281)
088 Podiatrists (283)
089 Health diagnosing practitioners, n.e.c., (289)
Health assessment and treating occupations
095 Registered nurses (29)
096 Pharmacists (301)
097 Dietitians (302)
Therapists
098 Inhalation therapists (pt 303)
099 Occupational therapists (pt 303)
103 Physical therapists (pt 303)
104 Speech therapists (pt 303)
105 Therapists, n.e.c. (pt 303)
106 Physicians' assistants (304)
Teachers, postsecondary
113 Earth, environmental, and marine science teachers (2212)
114 Biological science teachers (2213)
115 Chemistry teachers (2214)
116 Physics teachers (2215)
117 Natural science teachers, n.e.c. (2216)
118 Psychology teachers (2217)
119 Economics teachers (2218)
123 History teachers (2222)
124 Politica1 science teachers (2223)
125 Sociology teachers (2~24)
126 Social science teachers n.e.c. (2225)
127 Engineering teachers (2226)
128 Mathematical science teachers (2227)
129 Computer science teachers (2228)
133 Medical science teachers (pt 2232)
134 Health specialties teachers (pt 2232)
135 Business, commerce, and marketing teachers (2233)
136 Agriculture and forestry teachers (2234)
137 Art, drama, and music teachers (2235)
138 Physical education teachers (2236)
139 Education teachers (2237)
143 English teachers (2238)
144 Foreign language teachers (2242)
145 Law teachers (2243)
146 Social work teachers (2244)
147 Theology teachers (2245)
148 Trade and industrial teachers (2240)
149 Home economics teachers (pt 2249)
153 Teachers, postsecondary, n.e.c. (pt 2249)
154 Postsecondary teachers, subject not specified
Teachers, except postsecondary
155 Teachers, prekindergarten and kindergarten (231)
N(156) Teachers, elementary school (232)
P(157) Teachers, secondary schcol (233)
158 Teachers, special education (235)
159 Teachers, n.e.c. (234, 239)
163 Counselors, education and vocational (24)
Librarians, archivists, and curators
164 Librarians (251)
165 Archivists and curators (252)
Social scientists and urban planners
166 Economists (1912)
167 Psycologists (1915)
168 Sociologists (1916)
169 Social scientists, n.e.c. (1913, 1914, 1919)
173 Urban planners (192)
Social, recreation, and religious workers
174 Social workers (2032)
175 Recreation workers (2033)
176 Clergy (2042)
177 Religious workers, n.e.c (2049)
Lawyers and judges
178 Lawyers (211)
179 Judges (212)
Writers, artists, entertainers, and athletes
183 Authors (pt 321)
184 Technical writers (pt 321)
185 Designers (322)
186 Musicians and composers (323)
187 Actors and directors (324)
188 Painters, sculptors, craft-artists, and artist
printmakers (325, pt 7263)
189 Photographers (326)
193 Dancers (327)
194 Artists, performers, and related workers, n.e.c. (328,
329)
195 Editors and reporters (331)
197 Public relations specialists (332)
198 Announcers (333)
199 Athletes (34)
Technical, Sales, and Administrative Support Occupations
Occu-
pation Occupation category
code
TECHNICAL, SALES, AND ADMINISTRATIVE
SUPPORT OCCUPATIONS
Technicians and Related Support Occupations
Health technologists and technicians
203 Clinical laboratory technologists and technicians
(362)
204 Dental hygienists (363)
205 Health record technologists and technicians (364)
206 Radiologic technicians (365)
207 Licensed practical nurses (366)
208 Health technologists and technicians, n.e.c. (369)
Technologists and technicians, except health
Engineering and related technologists and
technicians
213 Electrical and electronic technicians (3711)
214 Industrial engineering technicians (3712)
215 Mechanical enginteering technicians (3713)
216 Engineering technicians, n.e.c. (3719)
217 Drafting occupations (3721)
218 Surveying and mapping technicians (3722)
Science technicians
223 Biological technicians (382)
224 Chemical technicians (3831)
225 Science technicians, n.e.c. (3832,3833, 384, 389)
Technicians, except health, engineering, and science
226 Airplane pilot, and navigators (645)
227 Air traffic controllers (391)
228 Broadcast equipment operators (392)
229 Computer programmers (3931,3932)
233 Tool programmers, numerical control (3934)
234 Legal assistant (396)
235 Technicians, n.e.c. (399)
Sales Occupations
243 Supervisors and proprietors, sales occupations (40, pt 4518)
Sales occupations, business goods and services
253 Insurance sales occupations (4222)
254 Real estate sales occupations (4223)
255 Securities and financial services sales occupations
(4224)
256 Advertising and related sales occupations (4253)
257 Sales occupations, other business services (4252)
258 Sales engineers (pt 16)
259 Sales representatives, mining, manufacturing, and
wholesale (412, 413)
Sales occupations, personal goods and services
263 Sales workers, motor vehicles and boats (4142,4144)
264 Sales workers, apparel (pt 4146)
265 Sales workers, shoes (pt 4146)
266 Sales workers, furniture and home furnishings (4148)
267 Sales workers; radio, television, hi-fi, and
appliances (4143,4152)
268 Sales workers, hardware and building supplies (4153)
269 Sales workers, parts (4167)
274 Sale workers, other commodities (4145, 4147,
4154, 41511, 4159,pt 4162, 4169, 4259, 4665)
275 Sales counter clerks (pt 4162)
Q(276) Cashiers (4663)
277 Street and door to door sales workers (4163)
278 News vendors (4165)
Sales related occupations
283 Demonstrators, promoters and models, sales (435)
284 Auctioneers (pt 435)
285 Sales support occupations, n.e.c. (434, 436, pt 439)
Administrative Support Occupations, Including Clerical
Supervisors, administrative support occupations
303 Supervisors, general office (4511-4514,4516, pt
4518,4519,4529,4537)
304 Supervisors, computer equipment operators (4535)
305 Supervisors, financial records processing (4521,
4536)
306 Chief communications operators (4515)
307 Supervisors,- distribution, scheduling, and adjusting
clerks (45224528)
Computer equipment operators
308 Computer operators (48521
309 Peripheral equipment operators (4853)
Secretaries, stenographers, and typists
R (313) Secretaries (4612)
314 Stenographers (4613)
315 Typists (4622)
Information clerks
316 Interviewers (4642)
317 Hotel clerks (4643)
318 Transportation ticket and reservation agents (4644)
319 Receptionists (4645)
323 Information clerks, n.e.c. (4649)
Records processing occupations, except financial
325 Classified-ad clerks (4662)
326 Correspondence clerks (4663)
327 Order clerks (4664)
328 Personnel clerks, except payroll and timekeeping
(4692)
329 Library clerks (4694)
335 File clerks (4696)
336 Records clerks (4693,4699)
Financial records processing occupations
5(337) Bookkeepers, accounting, and auditing clerks (4712)
338 Payroll and timekeeping cierks (4713)
339 Billing clerks (4715)
343 Cost and rate clerks (4716)
344 Billing, posting, and calculating machine operators
(486)
Duplicating, mail and other office machine operators
345 Duplicating machine operators (4872)
346 Mail preparing and paper handling machine operators
(4873)
347 Office machine operators, n.e.c. (4879)
Communications equipment operators
348 Telephone operators (4652)
349 Telegraphers (4623)
353 Communications equipment operators, n.e.c. (4659)
Mail and message distributing occupations
354 Postal clerks, exc. mail carriers (4723)
355 Mail carriers, postal service (4733)
356 Mail clerks, exc. postal service (4722)
357 Messengers (4732)
Material recording, scheduling, and distributing
clerks, n.e.c.
359 Dispatchers (4741)
363 Production coordinators (4742)
364 Traffic, shipping, and receiving clerks (4743)
365 Stock and inventory clerks (4744)
366 Meter readers (4745)
368 Weighers, measurers, and checkers (4746)
369 Samplers (4747)
373 Expediters (4748)
374 Material recording, scheduling, and distributing
clerks, n.e.c. (4749)
Adjusters and investigators
375 Insurance adjusters, examiners, and investigators
(4782)
376 Investigators and adjusters, except insurance (4783)
377 Eligibility clerks, social welfare (4784)
378 Bill and account collectors (4786)
Miscellaneous administrative support occupations
379 General office clerks (4632)
383 Bank tellers (4882)
384 Proofreaders (4792)
385 Data-entry keyers (4624)
386 Statistical clerks (4717)
387 Teachers' aids (4695)
389 Administrative support occupations, n.e.c. (4787,
4799)
Service Occupations
Occu-
pation Occupation category
code
SERVICE OCCUPATIONS
Private Household Occupations
403 Launderers and ironers (533)
404 Cooks, private household (534)
405 Housekeepers and butlers (535)
406 Child care workers, private household (536)
T(407) Private household cleaners and servants (532,537,539)
Protective Service Occupations
Supervisors, protective service occupations
413 Supervisors, firefighting and fire prevention occupa-
tons (5011)
414 Supervisors, police and detectives (5012)
415 Supervisors, guards (5013)
Firefighting and fire prevention occupations
416 Fire inspection and fire prevention occupations
(5112)
417 Firefighting occupations (5113)
Police and detectives
418 Police and detectives, public service (5122)
423 Sheriffs, bailiffs, and other law enforcement officers
(5124)
424 Correctional institution officers (5133)
Guards
425 Crossing guards (5132)
428 Guards and police, exc. public service (5134)
427 Protective service occupations, n.e.c. (5139)
Service Occupations, Except Protective and Private
Household
Food preparation and service occupations
433 Supervisors, food preparation and service occupations
(5021)
434 Bartenders (5212)
U(435) Waiters and waitresses (5213)
436 Cooks, exept short order (5214)
437 Short-order cooks (5215)
438 Food counter, fountain and related occupations
(5216)
439 Kitchen workers, food preparation (5217)
443 Waiters'/waitresses' assistants (5218)
444 Miscellaneous food preparation occupations (5219)
Health service occupation
445 Dental assistants (5232)
448 Health aides, except nursing (5233)
447 Nursing aides, orderlies and attendants (5236)
Cleaning and building service occupations, except
private household
448 Supervisors, cleaning and building service workers
(5024)
449 Maids and housemen (5242,5249)
V(453) Janitors and cleaners (5244)
454 Elevator operators (5245)
455 Pest control occupations (5246)
Personal service occupations
456 Supervisors, personal service occupations (5025)
457 Barbers (5251)
458 Hairdressers and co'smetol~isIs (5252)
459 Attendants, amusement and recreation facilities
(5253)
463 Guides (5254)
464 Ushers (5255)
465 Public transportation attendants (5258)
468 Baggage porters and bellhops (5258)
467 Welfare service aides (5262)
468 Child care workers, except private household (5263)
469 Personal service occupations, n.e.c. (5257,5269)
Farming, Forestry, and Fishing Occupations
Occu-
pation Occupation category
code
FARMING, FORESTRY, AND FISHING
OCCUPATIONS
Farm operators and managers
W(473) Farmers, except horticultural (5512-5514)
474 Horticultural specialty farmers (5515)
475 Managers, farms, except horticultural (5522-5524)
476 Managers, horticultural specialty farms (5525)
Other agricultural and related occupations
Farm occupations, except managerial
477 Supervisors, farm workers (5611)
479 Farm workers (5612-5617)
483 Marine life cultivation workers (5618)
484 Nursery workers (5619)
Related agricultural occupations
485 Supervisors, related agricultural occupations
(5621)
486 Groundskeepers and gardeners, except farm (5622)
487 Animal caretakers, except farm (5624)
488 Graders and sorters, agricultural products (5625)
489 Inspectors, agricultural products (5627)
Forestry and longing occupations
494 Supervisors, forestry and logging workers (571)
495 Forestry workers, except logging (572)
496 Timber cutting and logging occupations (573,579)
Fishers, hunters, and trappers
497 Captains and other officers, fishing vessels (582)
498 Fishers (583)
499 Hunters and trappers (584)
Precision Production, Craft, and Repair Occupations
Occu-
pation Occupation category
code
PRECISION PRODUCTION, CRAFT, AND REPAIR
OCCUPATIONS
Mechanics and repairers
503 Supervisors, mechanics and repairers (66)
Mechanics and repairers, except supervisors
Vehicle and mobile equipment mechanics and
repairers
X(505) Automobile mechanics (6711)
506 Automobile mechanic apprentices (pt 6711)
507 Bus, truck, and stationary engine mechanics
(6712)
508 Aircraft engine mechanics (6713)
509 Small engine repairers (6714)
514 Automobile body and related repairers (6715)
515 Aircraft mechanics, exc. engine (6716)
516 Heavy equipment mechanics (6717)
517 Farm equipment mechanics (6718)
518 Industrial machinery repairers (673)
519 Machinery maintenance occupations (674)
Electrical and electronic equipment repairers
523 Electronic repairers, communications and
industrial equipment (6751,6753,6755)
525 Data processing equipment repairers (6754)
526 Household appliance and power tool repairers
(6756)
527 Telephone line installers and repairers (8757)
529 Telephone installers and repairers (6758)
533 Miscellaneous electrical and electronic equip-
ment repairers (6752,6759)
534 Heating, air conditioning, and refrigeration
mechanics (676)
Miscellaneous mechanics and repairers
535 Camera, watch, and musical instrument repairers
(6771,6772)
536 Locksmiths and safe repairers (6773)
538 Office machine repairers (6774)
539 Mechanical controls and valve repairers (6775)
543 Elevator installers and repairers (6776)
547 Specified mechanics and repairers, n.e.c. (6777,
6779)
549 Not specified mechanics and repairers
Construction trades
Supervisors, construction occupations
553 Supervisors; brickmasons, stonemasons, and tile
setters (5012)
554 Supervisors, carpenters and related workers (6013)
555 Supervisors, electricians and power transmission
installers (6014)
556 Supervisors; painters, paperhangers, and plasterers
(6015)
557 Supervisors; plumbers, pipefitters, and steamfitters
(6016)
558 Supervisors, n.e.c. (6011,6018)
Construction trades, except supervisors
563 Brickmasons and stonemasons (6112,6113)
564 Brickmason and stonemason apprentices (pt
6112-6113)
565 Tile setters, hard and soft (6114, pt 6162)
566 Carpet installers (pt 6162)
Y(567) Carpenters (6122)
569 Carpenter apprentices (pt 6122)
573 Drywall installers (6124)
575 Electricians (6132)
576 Electrician apprentices (pt 6132)
577 Electrical power installers and repairers (6133)
579 Painters, construction and maintenance (6142)
583 Paperhangers (6143)
584 Plasterers (6144)
585 Plumbers, pipefitters, and steamfitters (6150)
587 Plumber, pipefitter, and steamfitter apprentices
(pt 6150)
588 Concrete and terrazzo finishers (6163)
589 Glaziers (6164)
593 Insulation workers (6165)
594 Paving, surfacing, and tamping equipment
operators (6166)
595 Roofers (6168)
596 Sheetmetal duct installers (6172)
597 Structural metal workers (6173)
598 Drillers, earth (6174)
599 Construction trades, n.e.c. (6167,6175,6176,
6179)
Extractive occupations
613 Supervisors, extractive occupations (602)
614 Drillers, oil well (622)
615 Explosives workers (623)
616 Mining machine operators (624)
617 Mining occupations, n.e.c. (626)
Precision production occupations
633 Supervisors, production occupations (pt 711,712)
Precision metal working occupations
634 Tool and die makers (7211)
635 Tool and die maker apprentices (pt 7211)
636 Precision assemblers, metal (7212)
637 Machinists (7213)
639 Machinist apprentices (pt 7213)
643 Boilermakers (7214)
644 Precision grinders, fitters, and tool snarpeners
(7216)
645 Patternmakers and model makers, metal (7217)
646 Lay-out workers (7221)
647 Precious stones and metals, workers (jewelers)
(7222,7266)
649 Engravers metal (7223)
653 Sheet metal workers (7224)
654 Sheet metal worker apprentices (pt 7224)
655 Miscellaneous precision metal workers (7229)
Precision, woodworking occupations
656 Patternmakers and model makers, wood (7231)
657 Cabinet makers and bench carpenters (7232)
658 Furniture and wood finishers (pt 7214, pt 7756)
659 Miscellaneous precision wookworkers (pt 7234,
7939)
Precision textile, apparel, and furnishings machine
workers
666 Dressmakers (7251, pt 7752)
667 Tailors (7252)
668 Upholsterers (7253)
669 Shoe repairers (7254)
673 Apparel and fabric patternmakers (pt 7259)
674 Miscellaneous precision apparel and fabric
(pt 7259, pt 7752)
Precision workers, assorted materials
675 Hand molders and shapers, except jewelers (7261)
676 Patternmakers, lay-out workers, and cutters (7262)
677 Optical goods workers (7264, pt 7677)
678 Dental laboratory and medical appliance tech-
nicians(7265)
679 Bookbinders (pt 7249, pt 7449)
683 Electrical and electronic equipment assemblers
(7267)
654 Miscellaneous precision workers, n.e.c. (7269)
Precision food production occupations
686 Butchers and meat cutters (7271)
687 Bakers (7272)
588 Food batchmakers (7273,7279)
Precision inspectors, testers, and related workers
689 Inspectors, testers, and graders (7281)
693 Adjusters and calibrators (7282)
Plant and system operators
694 Water and sewage treatment plant operators (791)
695 Power plant operators (pt 793)
696 Stationary engineers (pt 793,7668)
689 Miscellaneous plant and system operators (792,
794,785,796)
Operators, Fabricators, and Laborers
Occu-
pation Occupation category
code
OPERATORS, FABRICATORS, AND LABORERS
Machine Operators, Assemblers, and Inspectors
Machine operators and tenders, exoept precision
Metalworking and plastic working machine operators
703 Lathe and turning machine set-up operators
(7312)
704 Lathe and turning machine operators (7512)
705 Milling and planing machine operators (7313,
7513)
706 Punching and stamping press machine operators
(7314,7317,7514,7517)
707 Rolling machine operators (7316,7516)
708 Drilling and boring machine operators (7318,7518)
709 Grinding, abrading, buffing, and polishing machine
operators (7322,7324,7522)
713 Forging machine operators (7319,7519)
714 Numerical control machine operators (7326)
715 Miscellaneous metal, plastic, stone, and glass
working machine operators (7329,7529)
717 Fabricating machine, operators, n.e.c. (7339, 7539)
Metal and plastic processing machine operators
719 Molding and casting machine operators (7315,
7342,7515,7542)
723 Metal plating machine operators (7343,7543)
724 Heat treating equipment operators (7344,7544)
725 Miscellaneous metal and plastic processing machine
operators (7349,7549)
Woodworking machine operators
726 Wood lathe, routing, and planing machine opera-
tors (7431,7432,7631,7632)
727 Sawing machine operators (7433,7633)
728 Shaping and joining machine operators (7435,
7635)
729 Nailing and tacking machine operators (7636)
733 Miscellaneous woodworking machine operators
(7434,7439,7634,7639)
Printing machine operators
734 Printing machine operators (7443,7643)
735 Photoengravers and lithographers (7242,7444,
7644)
736 Typesetters and compositors (7241,7442,7642)
737 Miscellaneous printing machine operators (pt
7249, pt 7449,7649)
Textile, apparel, and furnishings machine operators
738 Winding and twisting machine operators (7451,
7651)
739 Knitting, looping, taping, and weaving machine
operators (7452,7652)
743 Textile cutting machine operators (7654)
744 Textile sewing machine operators (7655, pt 7656)
745 Shoe machine operators (pt 7656, pt 7659)
747 Pressing machine operators (7657)
748 Laundering and dry cleaning machine operators
(7255,7658)
749 Miscellaneous textile machine operators (7453,
7653, pt 7659)
Machine operators, assorted materials
753 Cementing and gluing machine operators (7661)
754 Packaging and filling machine operators (7462,
7662)
755 Extruding and forming machine operators (7463,
7663)
756 Mixing and blending machine operators (7664)
757 Separating, filtering, and clarifying machine
operators (7476,7666,7676)
758 Compressing and compacting machine operators
(7467,7667)
759 Painting and paint spraying machine operators
(7669)
763 Roasting and baking machine operators, food
(7472,7672)
764 Washing, cleaning, and picking machine operators
(7673)
765 Folding machine operators (7474,7674)
766 Furnace, kiln, and oven operators, exc. food
(7668,7671,7675)
768 Crushing and grinding machine operators (7477,
pt 7677)
769 Slicing and cutting machine operators (7478,
7678)
773 Motion picture projectionist, (pt 7679)
774 Photographic process machine operators (pt
7263, pt 7679)
777 Miscellaneous machine operators, n.e.c. (7479,
7665, pt 7679)
779 Machine operators, not specified
Fabricators, assemblers, and hand working occupa-
tions
783 Welders and cutters (7332,7532,7714)
784 Solderers and brazers (7333,7533,7717)
785 Assemblers (772,774)
786 Hand cutting and trimming occupations (7753)
787 Hand molding, casting, and forming occupations
(7764,7755)
789 Hand painting, coating, and decorating occupations
(pt 7756)
793 Hand engraving and printing occupations (7757)
794 Hand grinding and polishing occupations (7758)
795 Miscellaneous hand working occupations (7759)
Production inspectors, testers, samplers, and weighers
796 Production inspectors, checkers, and examiners 1782,
786,787)
797 Production testers (783)
798 Production samplers and weighers (784)
799 Graders and sorter, except agricultural (785)
Transportation and Material Moving Occupations
Motor vehicle operators
803 Supervisors, motor vehicle operators (6311)
Z(804) Truck drivers, heavy (6412,6413)
805 Truck drivers, light (6414)
806 Driver-sales workers (433)
808 Bus drivers (6415)
809 Taxi cab drivers and chauffeurs (6416)
813 Parking lot attendants (6417)
814 Motor transportation occupations, n.e.c. (6419)
Transportation occupations, except motor vehicles
Rail transportation occupations
823 Railroad conductors and yardmasters (6313)
824 Locomotive operating occupations 16432)
825 Railroad brake, signal, and switch operators (6433)
826 Rail vehicle operators, n.e.c. (6439)
Water transportation occupations
828 Ship captains and mates, except fishing boats
(6441,6442)
829 Sailors and deckhands (6443)
833 Marine engineers (6444)
834 Bridge, lock, and lighthouse tenders (6445)
Material moving equipment operators
843 Supervisors, material moving equipment operators
(632)
844 Operating engineers (6512)
845 Longshore equipment operators (6513)
848 Hoist and winch operators (6514)
849 Crane and tower operators (6515)
853 Excavating and loading machine operators (6516)
855 Grader, dozer, and scraper operators (6517)
856 Industrial truck and tractor equipment operators
(6518)
866 Miscellaneous material moving equipment operators
(6519, pt 659)
Handlers, Equipment Cleaners, Helpers, and Laborers
863 Supervisors;handlers, equipment cleaners, and laborers
n.e.c. (pt 711)
864 Helpers, mechanics and repairers (679)
Helpers, construction and extractive occupations
865 Helpers, construction trades (6191-6195,6198)
866 Helpers, surveyor (6196)
867 Helpers, extractive occupations (629)
869 Construction laborers (81)
873 Production helpers (769, 779)
Freight, stock, and material movers, hand
875 Garbage collectors (822)
876 Stevedores (823)
877 Stock handlers and baggers (824)
878 Machine feeders and offbearers (825)
883 Freight, stock, and material movers, hand, n.e.c.
(649,8261
885 Garage and service station related occupations (672)
887 Vehicle washers and equipment cleaners (83)
888 Hand packers and packagers (841)
889 Laborers, except construction (842,846, pt 659)
999 OCCUPATION NOT REPORTED(1)
----------------
1Code used when not-reported cases are not allocated.
Variance estimation
Appendix 6 - Variance Estimation
Short-Cut Method for Numbers and Percents
For users who wish to obtain variance estimates for total numbers
or percentages of women or their pregnancies, there is an easier
method than replicating estimates. Formulas are provided in this
section that will provide suitable estimates for many
applications.
These estimates were derived by designing tables using a number
of important dependent and independent variables. Sampling
errors were calculated for the estimated numbers in these tables.
The ratios of the variance to the square of the estimated number
were plotted against the inverse of the estimated number, and a
weighted least-squares line was fit to those points. The
intercept and slope for these lines are given in this report;
they can be used to estimate the standard errors of percentages
and weighted numbers from the NSFC.
To produce approximate standard errors for NSFC estimates, first
determine the type of characteristic to be estimated, that is,
the parameter set in table K to be used. The reader must then
determine the type of estimate that is needed. The type of
estimate corresponds to 3 rules.
Rule 1. Estimated number of women or pregnancies - For the
estimated number of women published in this report, there are two
cases to consider. For the first case, if the estimated number
is any combination of the poststratification cells in table G
then its value has been adjusted to official U.S. Bureau of the
Census figures and its standard error is assumed to be 0.0. This
corresponds to parameter set V in table K. As an example, this
would be the case for the number of women 15-44 the number of
black women 15-44, or the number of never married or ever married
women, the number of women 15-17, 18-19, 20-24, or in any other
5-year ago group. Although the race class "white" is not
specifically adjusted to U.S Bureau of the Census figures, it
dominates the poststratification "non-black" race class;
consequently, subgroups of "white" women can be treated as the
corresponding subgroup of non-black women in table C for the
purpose of approximating standard errors.
For the second case, the standard errors for all other estimates
of numbers of women or pregnancies such as the number of women
using the pill, are approximated by using the parameters provided
in table K and formula 1 below.
If the estimated number x for a characteristic has associated
parameters a and b, then the approximate standard error for x,
SE(x), can be computed by the formula
2 1/2
SE(x)= (ax + bx) (1)
See also tables L1-L4, which evaluates this formula at many
common levels.
Example of rule 1. The estimated number of women using the pill
is 10,734,000. From table K, parameter set III, the a and b
parameters for the numbers of women are -0.00018 and 10,738.
Using formula 1, the estimated standard error is
2 1/2
( (-0. 00018)(10,734,000) + (10,738) (10,734,000))
= 307,000
An approximate 95-porcent confidence interval for the number of
women using the pill is from 10,734 000 +- (1.96) times (307,449)
Rule 2. For rates, proportions, and percents when the donomina-
tor is generated by the poststratification classes (table G) - In
this case, the denominator has no sampling error. For example,
rule 2 would apply to the estimated percent of women using the
pill in a combination of the poststratification cells. Approxi-
mate standard errors for such estimates can be computed using the
a and b parameters in table K along with formula 2 below.
If the estimate of a rate, proportion, or percent p is the ratio
of two estimated numbers p = x/Y (where p may be inflated by 100
for percents or 1,000 for rates per 1,000 women) , with y having
no sampling error, then the approximate standard error for p is
given by the formula
1/2
SE(p) = p (a + b/x) (2)
See also table M1-M2, which evaluates this formula for many
common values.
Example of rule 2. The estimated proportion of all women 15-44
using the pill in 1988 was 15.6 percent. From table K, parameter
set III, the parameters a and b for number of women are -0.00018
and 10,738, respectively. Using formula 2, the estimated
standard error for the percent is
1/2
15.6 ((10.00018) + 10,738/10,734,000)) = 0.4
An approximate 95-percent confidence interval for the percent of
women using the pill is 15.6 +- (1.96) (0.4), or 14.8 to 16.4
percent.
Rule 3. Proportions and percents when the denominator is not
generated by the poststratification classes - If p represents an
estimated percent, b is the parameter from table K associated
with the numerator characteristics, and y is the number of
persons in the denominator upon which p is based, then the
standard error of p may be approximated by
1/2
SE(p) = (bp(100-p)/y) (3)
(If p is a proportion, then the above formula can be used but
with 100 replaced by 1.0) - see table P1-P4, which evaluates this
formula at many common levels.
Example of rule 3. An estimated 30.7 percent of contraceptors
were using the pill in 1988. This percent is based on the
denominator estimated of 34,912,000 women using contraception.
From table K, parameter set X, parameter b associated with health
status is 3,640. Using formula (3), the standard error for the
percent is
1/2
((10,738)(30.7)(100-30.7)/34,912,000) = 0.8 percent
An approximate 95 - percent confidence interval for the percent of
contraceptors using the pill is 30.7 +- (1.96) (0.8), or 29.1 to
32.3 percent.
Hypothesis Tests
An estimate of the standard error of the difference, X-Y, between
any two aggregates or percents is given by
2 2 1/2
5(X-Y) = (SX + SY )
2 2 2 2 1/2
= ((X )RSE (X) + (Y )RSE (Y))
This expression provides a good estimate of the standard error
for uncorrelated statistics, but it can be considered only a
rough approximation otherwise.
Because estimates from Cycle IV of the National Survey of Family
Growth are based on a large sample of women and because the
variance estimates were based upon such a large number of
replicates (100), the test statistics
X - Y
t = ________
S(X-Y)
will be approximately normally distributed. (See Wolter, 1985,
Appendix B.) Therefore, individual two-tailed significance tests
of differences between statistics from Cycle IV data can be
performed with an approximate significance level of alpha by
computing t and comparing it to the two-tailed 1-alpha critical value
for the normal distribution.
Example: In 1988, 33.92 percent of the pregnancies to black women
ended before age 20, while for other women the corresponding
percentage was 18.51. To test whether this racial difference
significant at the 0.05 level of significance, compute
33.92 - 18.51
t = -------------------------------------------------------
2 2 2 2 1/2
((33.92) . RSE (33.92) + (18.51) . RSE (18.51))
Relative standard errors are computed using the
appropriate values for B from Table K:
RSE(18.51) = (13216)(100 - 18.51)/(18.51)(80,842,470)
= 0.027
and
1/2
RSE(33.92) = ((4407)(100 - 33.92)/(33.92)(14,481,078))
= 0.024
thus
33.92 - 18.51
t = -------------------------------------------------
2 2 2 2 1/2
((33.92) (0.027) + (18.51) (0.044) )
= 12.5
The two-tailed .95 critical value (1 - alpha) for a normal statistic is
1.96. Therefore, the difference is significant at the .05 level.
Tables
Table K-Estimated Standard Error Parameters for Cycle IV
Table K. Estimated standard error parameters for the National
Survey of Family Growth Cycle IV
-----------------------------------------------------------------------------
Parameter Estimated parameters
set Characteristic a b
-----------------------------------------------------------------------------
I Number of pregnancies for - 0.000047 13216
total or non-black women
II Number of pregnancies for 0.000961 4407
black women
III Number of total or non- - 0.00018 10738
black women
IV Number of Black women - 0.000626 5181
V Number of women in any 0 0
combination of the post-
stratification cells in
table C.
-----------------------------------------------------------------------------
Table L1-Approx. Standard Errors for Total or Nonblack Women
Table L1. Approximate relative standard errors and standard
errors for estimated number of total or nonblack
women: 1988 National Survey of Family Growth
-----------------------------------------------------------------------------
Relative standard Standard
Size of estimate error (in percent) error
-----------------------------------------------------------------------------
100,000 32.0 32,000
250,000 20.4 51,000
500,000 14.4 72,000
1,000,000 10.2 102,000
5,000,000 4.4 221,000
10,000,000 3.0 298,000
20,000,000 1.9 377,000
30,000,000 1.3 400,000
50,000,000 0.6 294,000
58,000,000 0.2 131,000
-----------------------------------------------------------------------------
Table L2-Approx. Standard Errors for Number of Black Women
Table L2. Approximate relative standard errors standard errors
and standard errors for estimated number of black
women: 1988 National Survey of Family Growth
-----------------------------------------------------------------------------
Relative standard Standard
Size of estimate error (in percent) error
-----------------------------------------------------------------------------
100,000 22.0 22,000
250,000 14.0 35,000
500,000 9.8 49,000
1,000,000 6.7 67,000
5,000,000 2.0 101,000
7,500,000 0.8 60,000
-----------------------------------------------------------------------------
Table L3-Approx. Standard Errors for Estimated # of Pregnancies
Table L3. Approximate relative standard errors and standard
errors for estimated number of pregnancies to all or
nonblack women: 1988 National Survey of Family Growth
-----------------------------------------------------------------------------
Relative standard Standard
Size of estimate error (in percent) error
-----------------------------------------------------------------------------
100,000 36.0 36,000
250,000 22.8 57,000
500,000 16.2 81,000
1,000,000 11.4 114,000
5,000,000 5.1 254,000
10,000,000 3.6 357,000
20,000,000 2.5 495,000
30,000,000 2.0 595,000
50,000,000 1.5 737,000
75,000,000 1.1 852,000
100,000,000 0.9 922,000
-----------------------------------------------------------------------------
Table L4-Approx. Standard Error for Pregnancies of Black Women
Table L4. Approximate relative standard errors and standard
errors for estimated number of pregnancies to black
women: 1988 National Survey of Family Growth
-----------------------------------------------------------------------------
Relative standard Standard
Size of estimate error (in percent) error
-----------------------------------------------------------------------------
100,000 21.0 21,000
250,000 14.0 35,000
500,000 9.8 49,000
1,000,000 7.3 73,000
5,000,000 4.3 214,000
10,000,000 3.7 374,000
15,000,000 3.5 531,000
-----------------------------------------------------------------------------
Table M1-Approx. Errors of Percents for Total or Nonblack Women
Table M1. Approximate standard errors for estimated percents expressed in
percentage points for numbers of total or non-black women: 1988
National Survey of Family Growth (numerator but not denominator
estimated from survey)
-----------------------------------------------------------------------------
Estimated Percent
Numerator
of Percent 5 10 20 30 40 50 60 70 90 95
-----------------------------------------------------------------------------
100,000 1.6 3 3 8.5 9.8 13.1 16.4 19.6 22.9 29.5 31.1
250,000 1.0 2.1 4.1 6.2 8.3 10.3 12.4 14.5 18.6 19.6
500,000 0.7 1.5 2.9 4.4 5.8 7.3 8.8 10.2 13.1 13.9
1,000,000 0.5 1.0 2.1 3.1 4.1 5.1 6.2 7.2 9.2 9.8
5,000,000 0.2 0.4 0.9 1.3 1.8 2.2 2.7 3.1 4.0 4.2
10,000,000 0.1 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.8 2.8
50,000,000 0.0 0.1 0.1 0.2 0.2 0.3 0.4 0.4 0.6 0.6
-------------------------------------------------------------------------------
Table M2-Approx. Standard Errors for Percents for Black Women
Table M2. Approximate standard errors for estimated percents expressed in
percentage points for numbers of black women: 1988 National
Survey of Family Growth (numerator but not denominator estimated
from survey)
-----------------------------------------------------------------------------
Estimated Percent
Numerator
of Percent 5 10 20 30 40 50 60 70 90 95
------------------------------------------------------------------------------
100,000 1.1 2.3 4.5 6.8 9.0 11.3 13.6 15.8 20.4 21.5
250,000 0.7 1.4 2.8 4.3 5.7 7.1 8.5 9.9 12.8 13.5
500,000 0.5 1.0 2.0 3.0 3.9 4.9 5.9 6.9 8.9 9.4
1,000,000 0.3 0.7 1.3 2.0 2.7 3.4 4.0 4.7 6.4 6.4
5,000,000 0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.8 1.9
7,000,000 0.1 0.1 0.2 0.3 0.4 0.5 0.6 0.7 1.0 1.0
-----------------------------------------------------------------------------
Table P1
Table P1. Approximate standard errors for estimated percents expressed in
percentage points for numbers of total or nonblack women: 1988
National Survey of Family Growth (Numerater and denominator both
estimated from survey)
-----------------------------------------------------------------------------
Estimated percent
2 or 5 or 10 or 20 or 30 or 40 or
Base of percent 98 95 90 80 70 60 50
-----------------------------------------------------------------------------
Standard error in percentage points
100,000 4.6 7.1 9.8 13.1 15.0 16.1 16.4
250,000 2.9 4.5 6.2 8.3 9.5 10.2 10.4
500,000 2.1 3.2 4.4 5.9 6.7 7.2 7.3
1,000,000 1.5 2.3 3.1 4.1 4.7 5.1 5.2
5,000,000 0.6 1.0 1.4 1.9 2.1 2.3 2.3
10,000,000 0.5 0.7 1.0 1.3 1.5 1.6 1.6
20,000,000 0.3 0.5 0.7 0.9 1.1 1.1 1.2
30,000,000 0.3 0.4 0.6 0.8 0.9 0.9 0.9
50,000,000 0.2 0.3 0.4 0.6 0.7 0.7 0.7
58,000,000 0.2 0.3 0.4 0.5 0.6 0.7 0.7
Example of use of Table P1: If 30 percent of women in a specific
category were using the pill and the base of that percent was
10,000,000, then the 30-percent column and the 10,000,000 row
indicate that 1 standard error is 1.5 percentage points and 2
standard errors are twice that, or 3.0 percentage points.
Therefore, a 95 percent confidence interval on the percentage
would extend from 27.0 to 33.0 percent (30.0 percent plus or
minus 3.0 percent). In addition, the relative standard error of
that 30-percent estimate is 5.0 percent (1.5 percent divided by
30 percent).
Table P2
Table P2. Approximate standard errors for estimated percents expressed in
percentage points for numbers of black women: 1988 National
Survey of Family Growth
-----------------------------------------------------------------------------
Estimated percent
2 or 5 or 10 or 20 or 30 or 40 or
Base of percent 98 95 90 80 70 60 50
-----------------------------------------------------------------------------
Standard error in percentage points
100,000 3.2 5.0 6.8 9.1 10.4 11.2 11.4
250,000 2.0 3.1 4.3 5.8 6.6 7.1 7.2
500,000 1.4 2.2 3.1 4.1 4.7 5.0 5.1
1 , 000,000 1.0 1.6 2.2 2.9 3.3 3.5 3.6
5 , 000,000 0.5 0.7 1.0 1.3 1.5 1.6 1.6
7 , 500,000 0.4 0.6 0.8 1.1 1.2 1.3 1.3
------------------------------------------------------------------------------
Table P3-Approx Standard Errors for Percent of Pregnancies
Table P3. Approximate standard errors for estimated percents expressed in
percentage points for pregnancies to all or nonblack women: 1988
National Survey of Family Growth
-----------------------------------------------------------------------------
Estimated percent
2 or 5 or 10 or 20 or 30 or 40 or
Base of percent 98 95 90 80 70 60 50
-----------------------------------------------------------------------------
Standard error in percentage points
100,000 5.1 7.9 10.9 14.5 16.7 17.8 18.2
250,000 3.2 5.0 6.9 9.2 10.5 11.3 11.5
500,000 2.3 3.5 4.9 6.5 7.5 8.0 8.1
1,000,000 1.6 2.5 3.4 4.6 5.3 5.6 5.1
5,000,000 0.7 1.1 1.5 2.1 2.4 2.5 2.6
10,000,000 0.5 0.8 1.1 1.5 1.7 1.8 1.8
20,000,000 0.4 0.6 0.8 1.0 1.2 1.3 1.3
30,000,000 0.3 0.5 0.6 0.8 1.0 1.0 1.0
50,000,000 0.2 0.4 0.5 0.7 0.7 0.8 0.8
75,000,000 0.2 0.3 0.4 0.5 0.6 0.7 0.7
100,000,000 0.2 0.3 0.3 0.5 0.5 0.6 0.6
-----------------------------------------------------------------------------
Approx. Errors for Percent of Pregnancies of Black Women
Table P4. Approximate standard errors for estimated percents expressed in
percentage points for pregnancies to black women: 1988 National
Survey of Family Growth
-----------------------------------------------------------------------------
Estimated percent
2 or 5 or 10 or 20 or 30 or 40 or
Base of percent 98 95 90 80 70 60 50
-----------------------------------------------------------------------------
Standard error in percentage points
100,000 2.9 4.6 6.3 8.4 9.6 10.3 10.5
250,000 1.9 2.9 4.0 5.3 6.1 6.5 6.6
500,000 1.3 2.0 2.8 3.8 4.3 4.6 4.7
1,000,000 0.9 1.4 2.0 2.7 3.0 3.3 3.3
5,000,000 0.4 0.6 0.9 1.2 1.4 1.5 1.5
10,000,000 0.3 0.5 0.6 0.8 1.0 1.0 1.0
25,000,000 0.2 0.4 0.5 0.7 0.8 0.8 0.9