Human Development (R01-HD39285), and by a training grant from the National Institute of Child Health and Human Development to the University of Michigan’s Population Studies Center.

Unintended births are sometimes confused with premarital, teenage births, assuming that those who “accidentally ” become pregnant and give birth are mainly teenagers. Data from the 2002 National Survey of Family Growth were used to examine the distribution of pregnancy intentions for all births from 1997 through 2002 by marital status, age, education, and income. Analyses show that the bulk of unintended births occur to women in their twenties; teens account for relatively few unintended births. In terms of marital status, unintended births occur nearly equally to married and never married women. The majority of unintended births occurs to women with relatively little education and lower income. Overall, however, unintended births occur to all groups in society. Because of this diversity, it is unlikely that a single prevention approach will be effective. Researchers must focus on the multitude of causes of unintended childbearing and design multi-pronged intervention strategies targeted to specific groups. Unintended, Premarital, and Teenage Childbearing 3 Although the United States experienced declines in unintended childbearing in the 1970s and early 1980s, levels have recently risen, and the most recent national estimates indicate that approximately 35 % of live births from 1997-2002 were unintended at the time of conception (Chandra, Martinez, Mosher, Abma