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National Survey of Family Growth - (2006-2010) Pregnancy File




These surveys were based on personal interviews completed with 22,682 respondents. The main purpose of the NSFG surveys have been to provide reliable national data on marriage, divorce, contraception, infertility, and the health of women and infants in the United States. The survey contains key religion variables that may relate to these goals. The 2006-2010 NSFG survey represents a shift from periodic surveys to continues interviewing, with interviews being conducted 48 weeks of every year for 4 years. This public use data file contains all interviews conducted from June 2006-June 2010.

The pregnancy file uses each pregnancy mentioned by a respondent as the unit of analysis and contains detailed pregnancy histories and wantedness of pregnancies, as well as selected respondent characteristics.

Using the common identification number (CASEID), and the pregnancy number (PREGORDR), the interval and respondent files can be merged to produce a file containing both respondent information and pregnancy information. The resulting file can be either respondent-based or interval-based. The ARDA used the interval-based format for the data set.

The ARDA has added five additional variables to the original data set to enhance the users' experience on our site.

Data File

Cases: 20492
Variables: 279
Weight Variable: FNLWGT30, WGTQ1Q16, WGTQ9Q16, WGTQ5Q16. WGTQ1Q8

These are post-stratification weights.

Data Collection

June 2006 - June 2010

Original Survey (Instrument)

National Survey of Family Growth

Funded By

National Center for Health Statistics (NCHS)

Collection Procedures

Interviews were conducted in-person by female University of Michigan interviewers using CAPI and ACASI techniques via laptops.

Sampling Procedures

This sample is a national area, probability sample of households. The NSFG 2006-2010 includes oversamples for teenagers (aged 15-19) and black and Hispanic adults. See the related methodological publications listed below, under the ARDA's related publications section, for more information.

Principal Investigators

National Center for Health Statistics (NCHS)

Related Publications

NSFG 2006-2010 User's Guide

Full list of related publications

Methodological publications:

Groves RM, Mosher WD, Lepkowski J, Kirgis NG. (2009) Planning and development of the continuous National Survey of Family Growth. National Center for Health Statistics. Vital Health Stat 1(48).

Lepkowski JM, Mosher WD, Davis KE, Groves RM, Van Hoewyk J. (2010) The 2006-2010 National Survey of Family Growth: Sample design and analysis of a continuous survey. National Center for Health Statistics. Vital Health Stat 2(150).

"Appendix 5: Summary of NSFG Questionnaire Changes - Years 1, 2, and 3 of Continuous NSFG." From:2006-2010 NSFG User's Guide.

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