Sample Design, Sampling Weights, Imputation, and Variance Estimation in the 1995 National Survey of Family Growth The National Survey of Family Growth (NSFG) collects data on pregnancy, childbearing, and womens health from a national sample of women 15-44 years of age. The sample was drawn from 14,000 households interviewed in the 1993 National Health Interview Survey (NHIS). This report describes how the sample was designed, shows response rates for various subgroups of women, describes how the sampling weights were computed to make national estimates possible, shows how missing data were imputed for a limited set of key variables, and describes the proper ways to estimate sampling errors from the NSFG. The NSFG database consists of two files: the respondent file and the pregnancy-interval file. The respondent file contains one record for each of the 10,847 persons interviewed. The pregnancy-interval file contains one record for up to 15 pregnancy intervals experienced by the respondents. Data for 21,332 pregnancy intervals were collected. Keywords: survey methodology, response rates, imputation, variance estimation
This page last reviewed
January 11, 2007
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