National Survey of Family Growth
The National Survey of Family Growth (NSFG) provides national data on factors affecting birth and pregnancy rates, adoption, and maternal and infant health.
Interviewers are conducted in person by professional female interviewers using a standardized questionnaire. In all cycles, black women were sampled at a higher rate than white women. Hispanic persons were also oversampled in Cycles 5 and 6 (1995 and 2002). To produce national estimates, data for the interviewed sample were (1) inflated by the reciprocal of the probability of selection at each stage of sampling; (b) adjusted for nonresponse; and (c ) poststratified, or forced to agree with benchmark population values based on data from the U.S. Census Bureau.
In cycle 6 (2002), interviews were completed with 7,643 eligible women (about 80%) mad 4,928 eligible men (78%).
National Center for Health Statistics. Health United States 2009: With Special Feature on Medical Technology. Hyattsville, Maryland. 2010; pg 475.