Abstract
Background: Nearly half of all pregnancies in the United States are considered unintended (mistimed or unwanted), and this rate is even higher among younger and lower income women. The Affordable Care Act (ACA) dependent coverage provision may have influenced the frequency of unintended pregnancies by increasing accessibility to and affordability of family planning services among young adults. Furthermore, the impact of this provision may differ by young adult income level as those with lower income are less likely to be insured and thus more likely to benefit from this provision. Our objective was to estimate the association between the ACA dependent coverage provision and unintended pregnancy, overall, and by young adult income level. Methods: We applied a difference-in-differences approach to data from multiple cycles of the National Survey of Family Growth (n = 10,104) and compared trends in unintended pregnancy between those who were eligible to benefit (ages 18-25 years) and those who were ineligible to benefit (ages 26-33 years) from the provision, overall, and among income subgroups. Results: We found evidence that the dependent coverage provision was associated with a -7.4 percentage point reduction (95% CI: -13.5, -1.3) in the prevalence of unintended pregnancy among young adults with lower income (<100% of the federal poverty level). There was limited evidence, however, that the provision was associated with unintended pregnancy among young adults with higher income levels. Conclusions: These findings suggest the ACA dependent coverage provision may have reduced unintended pregnancy among a particularly high-risk group (i.e., young adults with lower income).