Housing
Characteristics (HOQ_C 2003-2004)
The 2003-2004
Housing Characteristics data contains a correction for one response
category of the variable HOQ040 - When was this {mobile
home/house/building} originally built? In the first release,
responses of "don't know" were erroneously set to missing. This
error has been corrected in this re-released dataset.
2001-2002
Dietary Interview Data
The NHANES 2001-2002
dietary interview data were re-released to include a set of weights
(i.e., variable: WTDRD1) that is recommended for use in analysis.
This new set of dietary intake weights for 2001-2002 data is
comparable with the Day 1 dietary weights created for 2003-2004
data, and the weights WTDRD1 are recommended for analyses that
combine 2001-2002 and 2003-2004 dietary data. Please see the
documentation provided with this new release for more details on the
dietary intake weights.
Early
Childhood Questionnaire (ECQ_C 2003-2004)
For the Early
Childhood Questionnaires for 2001-2004, errors in the reported values for
ECD010 (Age of mother at time of birth) and ECD070A and ECD070B (weight at
birth) have been corrected.
NHANES
Herpes I and II (NH2HERPE 1976-1980) The
NHANES II (1976-1980) hepatitis and herpes data were re-released (see “Hepatitis
A and B” and “Herpes I and II” on NHANES II page) to replace the
previous release entitled“Herpes and Hepatitis”. In previous
release, the herpes data and the hepatitis data were combined into the same
file, and the herpes data did not have the correct version. The new release
has the correct data version, newly compiled documentation files, and the
latest release format.
NHANES III Tutorial now available
To meet the growing demands of NHANES
data users, a second web-based tutorial was developed to promote and
facilitate broader and more proficient use of NHANES III data. The tutorial
is intended to serve as:
A
step-by-step course on NHANES III data retrieval and analysis for new users.
A
self-learning tool for novice and infrequent users to supplement their
knowledge of the NHANES III datasets.
The NHANES III tutorial, which
consists of courses orienting the user to the survey, preparing an analytic
dataset, and survey design factors, is now available on the NHANES website.
This tutorial supplements the Continuous NHANES tutorial. While Continuing
professional education credit is available for the Continuous NHANES Web
Tutorial, it is not available for the NHANES III Web Tutorial.
The access to NHANES Tutorials is
available via the second bulleted link 'NHANES Tutorials',
located under the 'What's New' item or through the icon on the right side of
the NHANES home page.
Lab
06 Nutritional Biochemistries (L06 1999-2000)
A parenthesis ")", which was missing due to a
typing error, was added at the end of the formula "AxSym =
10**(0.983*log10(IMX) + 0.0418" on page 7 of the documentation.
Lab
02 Hepatitis (Lab02 1999-2000) Because of quality control
issues LBXHBS (antibody to hepatitis B surface antigen) has been removed
from the Hepatitis data for years 1999-2004. This variable will be released
after these issues have been resolved.
Lab
06 Vitamin C (L06VIT_C 2003-2004)The decimal
point for variable LBDVICSI (Vitamin C (umol/L)) was changed from a whole
number to a number with one decimal point so that the
lower-than-the-detection-limit values would be identified correctly.
Lab
24 Polyfluorinated Compounds (L24PFC_C_2003-2004)has been
temporarily withdrawn from release. PFOS concentrations were based on an
incorrect mass spectrometric transition. A corrected dataset and
documentation will be posted.
April, 2007
Updated
Lab
02 Hepatitis files for 1999–2000,
2001–2002, and 2003–2004
were updated. Data for hepatitis B and D were added.
Lab
06 Nutritional Biochemistries file for 1999–2000
was updated.
The documentation files were
updated to add an analytical note for homocysteine.
Dietary
Supplement Use (DSQ C 2003-2004)
Dietary supplement files were updated to add
supplement records collected in the prescription medications section of the
SP questionnaire. These include prescription supplements and other items
later determined to be supplements.
The
1999–2000,
2001–2002, and 2003–2004
document files for Lab10am (Plasma Glucose) and Lab13am (Triglycerides) were
modified to clarify directions on use of the subsample weights.
Lab
06 Nutritional Biochemistries (L06 B 2001-2002)Homocysteine for 2001-2002 has
been temporarily removed. This analyte was measured by two different methods
during the 2001-2002 cycle. The data will be adjusted and reposted at a
later date.
Varlab
1999-2000Tuberculosis (TB) variables were removed from this lab
data variable list. TB data are located on the examination data web page and
TB variables included in the examination data variable list.
PHPYPA
Urinary Phthalates (PHPYPA B 2001-2002)
This document was revised to remove incorrect statements regarding
polyaromatic hydrocarbon analytes and variable detection limits. In fact,
for all polyaromatic hydrocarbon analytes in this data set, the detection
limit was constant.
Lab21 Volatile Organic Compounds (1999-2000) has been updated to correct
errors in identifying the results that were below the limit of detection,
and in the fill values used for results that were below the limit of
detection.
NHANES
Analytic and Reporting GuidelinesThe NHANES Analytic and Reporting Guidelines were
updated in September 2006 to correct minor typographical errors in the
SAS variables names for Stratum and MVU variables.
Notice
for Correction of Serum Creatinine for NHANES III, NHANES 1999-2000,
2001-2002 and 2003-2004
Body
Measures (BMXB 2001-2002)
The name of the SAS dataset was corrected to match that of the codebook and
export file (BMX_B). No changes have been made to the BMX_B data.
Medical
Conditions (MCQ
B 2001-2002) The MCQ_B
data and related files were revised to correct topcoding on age variables,
and to replace a continuous year variable with a discrete variable having
three values: Before 1972, 1972-1991, and 1992-present.
Medical
Conditions (MCQ 1999-2000) The MCQ data and related files were revised to correct topcoding on
age variables, and to replace a continuous year variable with a discrete
variable having three values: Before 1972, 1972-1991, and 1992-present.
To meet the growing demands of
NHANES data users, a web-based tutorial was developed to promote and
facilitate broader and more proficient use of NHANES data. The tutorial is
intended to serve as:
A
step-by-step course on NHANES data retrieval and analysis for new users.
A
self-learning tool for novice and infrequent users to supplement their
knowledge of the NHANES database and the analysis techniques required to
properly analyze this complex dataset.
A
reference for experienced researchers highlighting NHANES analytic nuances
and sample program code.
The first phase of the tutorial
is now accessible via the NHANES home page. Some modules/sections are still
incomplete, but will be posted on the NHANES website as soon as they are
complete. The targeted completion date for the entire tutorial is January
2007.
Lab
06 Homocysteine (L06MH C 2003-2004)
This document was updated to remove an incorrect sentence referencing the
derivatization of Methylmalonic acid from traditional units to international
units (SI). The data is reported in SI units.
Urine
Collection (Pregnancy) (UC 1999-2000)
The correct Urine Collection
files (dated Nov 2005) are now available, replacing earlier versions of the
files that had been inadvertently posted.
Oral
Health (Dentition) (OHXDENT C 2001-2002)Corrections have
been made to the Oral Health Dentition data and codebook to correct labels,
and extraneous codes have been removed from the codebook. No changes
have been made to the data values.
Oral
Health (Dentition) (OHXDENT 1999-2000)Corrections have been made to
the Oral Health Dentition data and codebook to correct labels, and
extraneous codes have been removed from the codebook. No changes have
been made to the data values.
Oral
Health Dentition (OHXDEN_B 2001-2002) Text
corrections have been made to the Oral Health Dentition documentation and
frequency files. No changes have been made to the data file.
Oral
Health Dentition (OHXDENT 1999-2000)Text corrections have been made to the Oral Health
Dentition documentation and frequency files. No changes have been made to
the data file.
Lab
10AM Glucose, C-peptide (L10AM_C 2003-2004)
Insulin data were removed because data issues related to the lab method
change in 2003 need to be addressed. Two records were changed from 'missing'
to 'real' values for C-peptide as a result of a recent database update.
Balance
Exam (BAX_C 2003-2004)
The documentation file has been updated to include cumulative
frequencies, and frequencies for "continuous" variables have been
converted to ranges. The dataset has not changed.