Last data update: May 06, 2024. (Total: 46732 publications since 2009)
Records 1-7 (of 7 Records) |
Query Trace: Abma J[original query] |
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Nonuse of contraception among women at risk of unintended pregnancy in the United States
Mosher W , Jones J , Abma J . Contraception 2015 92 (2) 170-6 OBJECTIVE: This paper seeks to determine factors associated with nonuse of contraception by women at risk of unintended pregnancy in the United States. This nonuse may be associated with about 900,000 unintended births in the US each year. STUDY DESIGN: The 2002 and 2006-2010 National Surveys of Family Growth were combined to yield a nationally representative sample of 9,675 women at risk of unintended pregnancy. Logistic regression analyses identified factors associated with nonuse of contraception. RESULTS: This analysis reveals previously undocumented patterns of nonuse: controlling for confounding variables, cohabiting women (Adjusted Odds ratio =2.3, 95% Confidence Interval=1.45-3.52) had higher odds of nonuse than married women; women who reported a difficulty getting pregnant (AOR = 2.5, 95% CI=2.01-3.01) had higher odds of nonuse than those who did not. Nonuse was also more common among women with a Master's degree or more (AOR=1.5, 95% CI=1.11-2.08) compared with those with some college or bachelor's degree, and it was more common among women in their first year after first intercourse than after the first year (AOR 1.6, 95% CI=1.12-2.22). Among women who had a recent unintended birth, the most common reason for not using contraception prior to conception was that she did not think she could get pregnant. CONCLUSIONS: This study establishes national estimates of reasons for nonuse of contraception, and identifies some new subgroups at risk of nonuse. IMPLICATIONS: These results may help better understand factors affecting nonuse of contraception, and develop strategies in preventing unintended pregnancy in the United States. |
Changing sociodemographic factors and teen fertility: 1991-2009
Driscoll AK , Abma JC . Matern Child Health J 2015 19 (10) 2159-67 This study analyzed the roles of trends in sociodemographic factors known to be related to the risk of a teen birth. The goal was to analyze the roles of these trends in maternal education, family structure and mother's age at first birth in the likelihood of adolescents becoming teen mothers across multiple birth cohorts of women covering the years since 1991. Data are from the 1995, 2002, 2006-2010 and 2011-2013 National Surveys of Family Growth (NSFG). Consecutive birth cohorts of female respondents were constructed and retrospectively followed to estimate the risk of a teen birth for each cohort. Logistic regression models estimate the odds of a teen birth across cohorts and within strata of the predictors across cohorts. Maternal education rose across cohorts; the proportion who were non-Hispanic white declined. In general, the likelihood of an adolescent birth did not change within categories of the predictors that are considered at higher risk for a teen birth across birth cohorts. Specifically, there was no change in the odds of a teen birth among women whose mothers did not finish high school, those born to teen mothers and those not from two-parent families. The odds of a birth declined across cohorts for black women. The findings suggest that much of the decline in teen birth rates is due to declines in the proportion of teens in higher risk categories, rather than to declines within those categories. |
Intended and unintended births in the United States: 1982-2010
Mosher WD , Jones J , Abma JC . Natl Health Stat Report 2012 55 (55) 1-28 OBJECTIVES: This report shows trends since 1982 in whether a woman wanted to get pregnant just before the pregnancy occurred. This is the most direct measure available of the extent to which women are able (or unable) to choose to have the number of births they want, when they want them. In this report, this is called the "standard measure of unintended pregnancy." METHODS: The data used in this report are primarily from the 2006-2010 National Survey of Family Growth (NSFG), conducted by the Centers for Disease Control and Prevention's National Center for Health Statistics. The 2006-2010 NSFG included in-person interviews with 12,279 women aged 15-44. Some data in the trend analyses are taken from NSFG surveys conducted in 1982, 1988, 1995, and 2002. RESULTS: About 37% of births in the United States were unintended at the time of conception. The overall proportion unintended has not declined significantly since 1982. The proportion unintended did decline significantly between 1982 and 2006-2010 among births to married, non-Hispanic white women. Large differences exist between groups in the percentage of births that are unintended. For example, unmarried women, black women, and women with less education or income are still much more likely to experience unintended births compared with married, white, college-educated, and high-income women. This report also describes some alternative measures of unintended births that give researchers an opportunity to study this topic in new ways. |
Adolescent pregnancy and childbirth - United States, 1991-2008
Ventura SJ , Mathews TJ , Hamilton BE , Sutton PD , Abma JC . MMWR Suppl 2011 60 (1) 105-8 Giving birth to a child during the adolescent years frequently is associated with long-term adverse consequences for the mother and her child (1--3) that often are attributable in part to fragile family structure and limited social support and financial resources. Compared with infants born to adult women, infants born to adolescent females are at elevated risk for preterm birth, low birth weight, or death during infancy (4--6). An estimated 82% of pregnancies in 2001 among adolescents were unintended (7,8). | | To analyze trends and variations in adolescent pregnancy and birth rates, CDC analyzed birth data from the National Vital Statistics System (NVSS) for 1991--2008. Data for 1991--2007 are final; data for 2008 are preliminary (4,6). Data by maternal race/ethnicity are based on information reported by the mother during the birth registration process. Race and ethnicity are reported separately on birth certificates. Birth rates were calculated by using population estimates prepared by the U.S. Census Bureau. Percentage change over time was calculated by comparing the rates for the beginning and end points in each time period. In analyzing differences over time and among groups, only statistically significant differences are noted. Significance testing is based on the z-test at the 95% confidence level (4,6). Additional information is available elsewhere (4,6). Data regarding adolescent pregnancy are not as current or complete as NVSS data regarding adolescent births. Birth data are based on NVSS and are shared with CDC through the Vital Statistics Cooperative Program (VSCP). National data on adolescent pregnancy and childbirth according to such attributes as educational attainment and disability status are not available because this information is not collected consistently and completely in NVSS and the National Abortion Surveillance System. Abortion estimates are from abortion surveillance information collected from the majority of states by CDC; these estimates are adjusted to national totals by the Guttmacher Institute (9). Information on fetal losses is derived from the pregnancy history data collected from multiple cycles of the National Survey of Family Growth (NSFG), conducted by CDC's National Center for Health Statistics (9). The most recent pregnancy estimates that include data on live births, induced abortions, and fetal losses are for 2005 (9). |
Educating teenagers about sex in the United States
Martinez G , Abma J , Copen C . NCHS Data Brief 2010 (44) 1-8 KEY FINDINGS: Most teenagers received formal sex education before they were 18 (96% of female and 97% of male teenagers). Female teenagers were more likely than male teenagers to report first receiving instruction on birth control methods in high school (47% compared with 38%). Younger female teenagers were more likely than younger male teenagers to have talked to their parents about sex and birth control. Nearly two out of three female teenagers talked to their parents about "how to say no to sex" compared with about two out of five male teenagers. |
Estimated pregnancy rates for the United States, 1990-2005: an update
Ventura SJ , Abma JC , Mosher WD , Henshaw SK . Natl Vital Stat Rep 2009 58 (4) 1-14 OBJECTIVES: This report presents detailed pregnancy rates for 1990-2005, updating a national series of rates extending since 1976. METHODS: Tabular data on pregnancy rates by age, race and Hispanic origin, and by marital status are presented and briefly described. RESULTS: in 2005, an estimated 6,408,000 pregnancies resulted in 4.14 million live births, 1.21 million induced abortions, and 1.06 million fetal losses. The 2005 pregnancy rate of 103.2 pregnancies per 1000 women aged 15-44 years is 11 percent below the 1990 peak of 115.8. The teenage pregnancy rate dropped 40 percent from 1990 to 2005, reaching an historic low of 70.6 per 1000 women aged 15-19 years. Rates fell much more for younger than for older teenagers. |
Coercive first intercourse and unintended first births
Williams CM , Brett KM , Abma JC . Violence Vict 2009 24 (3) 351-63 Since research has shown that victims of violence are more likely to be involved in subsequent risky sexual behaviors, we hypothesized that coercive first intercourse would be associated with unintended first births. Using nationally representative data from the 2002 National Survey of Family Growth, we analyzed female respondents aged 18-44 years who reported a live birth (n = 4,136). Coercion was classified as none/minimal, mild, or significant based on self-report. In 2002, 13.7% of U.S. women aged 18-44 who had at least one live birth experienced mild coercion and 9.8% experienced significant coercion at first intercourse. Compared with women who experienced no coercion, the odds of reporting an unintended first birth was greater for women who experienced mild (OR: 1.9, 95% CI: 1.4-2.6) or significant coercion (OR: 2.3, 95% CI: 1.6-3.4). |
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