"Table A2 - Extended interview weighting for 2002 National Transportation Availability and Use Survey sample
",,,
,Disabled*,Nondisabled*,Total*
1. Person initial weights,,,
1.1 Number of sampled persons,"2,531","3,224","5,755"
1.2 Sum of weights,"30,515,402","255,332,502","285,847,904"
1.3 CV,41.65,59.96,98.32
2. Nonresponse adjustment,   ,,
2.1 Number of completed adult interviews,"2,241","2,778","5,019"
2.2 Sum of weights before adjustment,"30,515,402","255,332,502","285,847,904"
a. Eligible respondents,"27,038,064","218,212,620","245,250,684"
b. Eligible nonrespondents,"2,911,239","29,228,078","32,139,317"
c. Ineligibles,"566,098","7,891,805","8,457,903"
2.3 Sum of weights after adjustment,"30,515,402","255,332,502","285,847,904"
a. Eligible respondents,"29,949,303","247,440,698","277,390,001"
b. Eligible nonrespondents,0,0,0
c. Ineligibles,"566,098","7,891,805","8,457,903"
2.4 Mean adjustment factor,1.11,1.14,1.12
2.5 CV,41.6,59.56,98.91
3. Trimming adjustment**,,,
3.1 Number of trimmed records,8,4,12
3.2 Sum of weights before trimming adjustment,"33,453,727","243,936,274","277,390,001"
3.3 CV before trimming,117.58,66.58,98.91
3.3 Sum of weights after trimming adjustment,"32,865,554","243,526,307","276,391,861"
3.4 CV after trimming,98.78,65.99,97.92
4. Raking adjustment***,,,
4.1 Number of completed adult interviews,"2,061","2,958","5,019"
4.2 Sum of weights after adjustment,"49,499,318","224,143,955","273,643,273"
4.3 Mean adjustment factor,1.48,0.92,0.99
4.4 CV,113.7,77,99.8
4.5 Mean weight,"24,017.14","75,775.51","54,521.47"
* Some rows within sections may not sum to the respective totals due to rounding.,,,
** Counts of completed interviews and sums of weights in sections 3 and 4 are based on self-reported disability status (census definition) rather    than sampling disability status. For this reason lines 2.3.a and 3.2 are not equal within groups.,,,
*** The raking adjustment accounts for telephone interruption by including an additional raking dimension. See Section 4.4 for further details,,,
Source: 2002 Transportation Availability and Use Study,,,