Changes in Abortion Rates Between 2000 and 2008 and Lifetime Incidence of Abortion

OBJECTIVE: To estimate abortion rates among subpopulations of women in 2008, assess changes in subpopulation abortion rates since 2000, and estimate the lifetime incidence of abortion. METHODS: We combined secondary data from several sources, including the 2008 Abortion Patient Survey, the Current Population Surveys for 2008 and 2009, and the 2006-2008 National Survey of Family Growth, to estimate abortion rates by subgroup and lifetime incidence of abortion for U. S. women of reproductive age. RESULTS: The abortion rate declined 8.0% between 2000 and 2008, from 21.3 abortions per 1,000 women aged 15-44 to 19.6 per 1,000. Decreases in abortion were experienced by most subgroups of women. One notable exception was poor women; this group accounted for 42.4% of abortions in 2008, and their abortion rate increased 17.5% between 2000 and 2008 from 44.4 to 52.2 abortions per 1,000. In addition to poor women, abortion rates were highest for women who were cohabiting (52.0 per 1,000), aged 20-24 (39.9 per 1,000), or non-Hispanic African American (40.2 per 1,000). If the 2008 abortion rate prevails, 30.0% of women will have an abortion by age 45. CONCLUSION: Abortion is becoming increasingly concentrated among poor women, and restrictions on abortion disproportionately affect this population. (Obstet Gynecol 2011;117:1358-66) DOI: 10.1097/AOG.0b013e31821c405e