Question J-4. How many months in a row had you been using that method when you became pregnant?


(Number of months, ranging from 0 to 360)

Finally, the 1995 NSFG uses a memory aid that may, among other benefits, improve data on contraception. NSFG staff have designed a calendar for respondents to refer to throughout the interview to help them remember the dates of the events that they report. A respondent writes important events on the calendar as she proceeds through the interview, such as her date of marriage, the dates of birth of her children, and dates when she was not having sexual intercourse for an extended time. The hope is that giving the woman a context in which to remember her contraceptive use will produce more accurate data.

The trends in unintended pregnancy seem clear and their measurement fairly straightforward. The NSFG is striving to improve the measurement of the more elusive concepts related to unintended pregnancy. It is hoped that the NSFG will continue to take the lead in producing the data needed to understand the causes of unintended pregnancy.


Baldwin AK, Jobe JB, London KA, Rasinski KA, Pratt WF, Tourangeau R. Answering sensitive questions in a health survey. Forthcoming.

Jones E, Forrest J. Underreporting of abortion in surveys of U.S. women: 1976–1988. Demography. 1992;29:113–126.

Piccinino, LJ. Unintended pregnancy and childbearing. In From Data to Action. Wilcox L. Marks J, eds. Washington, DC: U.S. Department of Health and Human Services and Centers for Disease Control and Prevention; Forthcoming.

Pratt WF, Peterson LS, Piccinino LJ. Trends in Contraceptive Practice and Contraceptive Choice, United States: 1965–1990. Paper presented at the NIH Conference on Opportunities in Contraception: Research and Development. Bethesda, MD: National Institutes of Health; 1992.

Research Triangle Institute. National Survey of Family Growth, Cycle V, Pretest Report. Research Triangle Park: Research Triangle Institute; 1994.

Rich IM. General Pregnancy Attitudes, Ambivalence, and Psychological Symptom Distress During Pregnancy. Ph.D.dissertation. Catholic University of America; 1993.

Williams LB, London KA. The planning status of births to ever-married women in the United States: 1982-1988. Fam Plann Perspect. 1992;26:121–124.

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