The concept of unintended pregnancy has been essential to demographers in seeking to understand fertility, to public health practitioners in preventing unwanted childbearing and to both groups in promoting a woman's ability to determine whether and when to have children. Accurate measurement of pregnancy intentions is important in understanding fertility-related behaviors, forecasting fertility, estimating unmet need for contraception, understanding the impact of pregnancy intentions on maternal and child health, designing family planning programs and evaluating their effectiveness, and creating and evaluating community-based programs that prevent unintended pregnancy. 1 Pregnancy unintendedness is a complex concept, and has been the subject of recent conceptual and methodological critiques. 2 Pregnancy intentions are increasingly viewed as encompassing affective, cognitive, cultural and contextual dimensions. Developing a more complete understanding of pregnancy intentions should advance efforts to increase contraceptive use, to prevent unintended pregnancies and to improve the health of women and their children.To provide a scientific foundation for public health efforts to prevent unintended pregnancy, we conducted a review of unintended pregnancy between the fall of 1999 and the spring of 2001 as part of strategic planning activities within the Division of Reproductive Health at the Centers for Disease Control and Prevention (CDC). We reviewed the published and unpublished literature, consulted with experts in reproductive health and held several joint meetings with the Demographic and Behavioral Research Branch of the National Institute of Child Health and Human Development, and the Office of Population Affairs of the Department of Health and Human Services. We used standard scientific search engines, such as Medline, to find relevant articles published since 1975, and identified older references from bibliographies contained in recent articles; academic experts and federal officials helped to identify unpublished reports. This comment summarizes our findings and incorporates insights gained from the joint meetings and the strategic planning process. CURRENT DEFINITIONS AND MEASURESConventional measures of unintended pregnancy are designed to reflect a woman's intentions before she became pregnant. 3 Unintended pregnancies are pregnancies that are reported to have been either unwanted (i.e., they occurred when no children, or no more children, were desired) or mistimed (i.e., they occurred earlier than desired). In contrast, pregnancies are described as intended if they are reported to have happened at the "right time" 4 or later than desired (because of infertility or difficulties in conceiving). A concept related to unintended pregnancy is unplanned pregnancy-one that occurred when the woman used a contraceptive method or when she did not desire to become pregnant but did not use a method. Intentions are often measured or reported only for pregnancies ending in live births; pregnancies ending in abortion a...

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Given the racial/ethnic disparities that characterize STI trends and recent increases in heterosexually transmitted HIV infection in the US, an understanding of factors underlying condom use among young adults in minority communities is vitally important. To this end, this paper presents findings from a community venue-based survey examining the influence of motivations, heuristics, and relationship factors on condom behaviors with serious and casual heterosexual partners in a sample of urban African American and Puerto Rican males and females ages 18-25 (n = 380). Condom use rates at time of last sex were considerably higher with casual partners (n = 87) than with serious (n = 313) partners, 77.9% vs. 38.7%. While dual pregnancy/STI prevention was the most frequently cited reason for use at last sex with casual partners, pregnancy prevention was the most frequently cited reason for use with serious partners. Bivariate conditional logistic regression analyses found two factors to be associated with condom use at last sex with casual partners: use at first sex with the partner and belief that neighborhood peers worried some/a lot about HIV. In contrast, such factors as condom heuristics (e.g., nonuse symbolizes trust), contraceptive status, and markers of emotional intimacy were associated with condom use with serious partners in both bivariate and multivariable analyses.