Effects of the Affordable Care Act on Contraception, Pregnancy, and Pregnancy Termination Rates.

Objective: To investigate the effects of the Affordable Care Act (ACA) and its elimination of cost-sharing on contraception utilization, pregnancy rates, and abortion rates.

Methods: We conducted a retrospective cohort study within a healthcare system serving over 4.5 million insured members across 21 medical centers and 250 clinics. The study included women aged 18-45 with continuous health plan membership for at least two years in the pre-ACA (2007-2012) and post-ACA (2013-2018) periods. We analyzed out-of-pocket (OOP) costs for contraception, including oral contraceptives and long-acting reversible contraception (LARC), before and after the ACA's implementation. We then examined how the elimination of OOP costs affected contraception use, pregnancy rates, and abortion rates.

Results: The study identified 1,523,962 women of childbearing age. In 2013, cost sharing for contraception sharply declined, with average annual OOP costs dropping from $88-$94 pre-ACA to nearly zero post-ACA. Contraceptive use increased overall, rising from 30.2% pre-ACA to 31.9% by the study's end, with a notable rise in LARC use. In interrupted time-series analyses, while contraception use continued to increase post-ACA, new pregnancy rates declined at a faster rate than pre-ACA, and abortion rates continued to fall, though at a slightly slower pace than pre-ACA (p<0.05 for all trends).

Conclusions: The Affordable Care Act's elimination of contraception cost-sharing led to increased contraception use, particularly LARC methods, and contributed to declines in both pregnancy and abortion rates. This suggests that improving access to effective contraception is a key strategy in reducing unintended pregnancies.