The National Survey of Family Growth is conducted in five-year cycles. In each cycle, surveys are administered via personal interviews with people at homes. The interviewees generally comprise only the civilian, non-institutionalized population. The cycles so far have been:
Cycle 1, started 1973
Cycle 2, started 1976
Cycle 3, started 1982
Cycle 4, started 1988
Cycle 5, started 1995
Cycle 6, started 2002
2006-2010 NSFG
2011-2015
While Cycles 1-5 surveyed only women, Cycle 6 and later surveyed both men and women and used households as the unit of analysis. Cycle 6 surveyed 12,571 respondents 15–44 years of age: 7,643 females and 4,928 males. The 2006-2010 NSFG surveyed 22,682 interviews: over 10,000 interviews with men and more than 12,000 interviews with women. For Cycle 6 onward, the surveys were conducted in person by female interviewers who are hired and managed by the University of Michigan Institute for Social Research. The survey samples are intended to be nationally representative but not necessarily representative at subnational levels.
Data
For the survey cycles that have been completed, data is available both in the form of portable document format summaries and as full data files. In addition, program statements are available in SAS, SPSS, and STATA. Key statistics are also browsable online. NSFG data is also mirrored on the website of the University of Michigan's Inter-university Consortium for Political and Social Research.
Reception and impact
Claims
The NSFG website claims that the NSFG is used as follows:
by state and local governments to plan health and social service programs;
by private-sector research organizations which distribute the information to the public and to policy makers; and
by the press, to prepare articles on a number of topics related to health and family life.
Academic research
The NSFG website claims that the NSFG has been cited in "more than 600 journal articles, NCHS reports, and book chapters shown in our publication lists." The research citing the NSFG is concentrated more on topics related to family planning, contraception, abortion, and fertility.