The 2006-2010 National Survey of Family Growth: sample design and analysis of a continuous survey.
ABSTRACT The National Survey of Family Growth (NSFG) collects data on pregnancy, childbearing, men's and women's health, and parenting from a national sample of women and men 15-44 years of age in the United States. This report describes the sample design for the NSFG's new continuous design and the effects of that design on weighting and variance estimation procedures. A working knowledge of this information is important for researchers who wish to use the data. Two data files are being released--the first covering 2.5 years (30 months) of data collection and the second after all data have been collected. This report is being released with the first data file. A later report in this Series will include specific results of the weighting, imputation, and variance estimation.
The NSFG's new design is based on an independent, national probability sample of women and men 15-44 years of age. Fieldwork was carried out by the University of Michigan's Institute for Social Research (ISR) under a contract with the National Center for Health Statistics (NCHS). In-person, face-to-face interviews were conducted by professional female interviewers using laptop computers.
Analysis of NSFG data requires the use of sampling weights and estimation of sampling errors that account for the complex sample design and estimation features of the survey. Sampling weights are provided on the data files. The rate of missing data in the survey is generally low. However, missing data were imputed for about 600 key variables (called "recodes") that are used for most analyses of the survey. Imputation was accomplished using a multiple regression procedure with software called IVEware, available from the University of Michigan website.
- SourceAvailable from: Teresa Castro-MartinDemographic Research 01/2015; 32:147-182. DOI:10.4054/DemRes.2015.32.5 · 1.20 Impact Factor
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ABSTRACT: Use of withdrawal (coitus interruptus) has consequences for reproductive health, but few nationally representative studies exist. We 1) examined patterns of withdrawal among 15-24 year-old women and men, and 2) explored withdrawal’s associations with socio-demographic, psychological, and sexual factors.Contraception 12/2014; 91(4). DOI:10.1016/j.contraception.2014.12.005 · 2.93 Impact Factor
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ABSTRACT: To analyze a nationally representative sample of women for correlates of dual-contraceptive-method use. We conducted an analysis of the National Survey of Family Growth, 2006-2008, a cross-sectional survey of reproductive-aged women in the United States. Dual method use was reported by 7.3% of the 5,178 women in the sample. Correlates of higher rates of dual-contraceptive-method use included age younger than 36 years and nonmarried marital status. Lower rates of dual method use were observed for women with less than a high-school education and women without consistent health insurance in the past year. Compared to women using oral contraceptives, use of the contraceptive injection or long-acting reversible contraception was associated with lower dual-method use. The overall rate of dual-method use in the USA is low. Future interventions to promote dual method use should target high-risk groups with modifiable risk factors.Infectious Diseases in Obstetrics and Gynecology 02/2012; 2012:717163. DOI:10.1155/2012/717163