Objective: Intimate partner violence (IPV) is an important public health problem that impacts reproductive decision-making. Although previous literature has reported a negative impact on contraceptive adherence overall, this study specifically aims to investigate the association between IPV and oral contraceptive pill (OCP) adherence. Methods: We analyzed baseline survey data from 373 OCP users participating in the MyNewOptions study. Recent IPV was defined as any positive response to HARK, a 4-question tool assessing emotional, sexual, and physical abuse in the past year, or self-report of sexual coercion in the past 6 months. High OCP adherence was defined by self-report of missing ≤1 pill per month, which was then corroborated by pharmacy claims data. Multivariable regression analyses were performed to assess the influence of recent IPV history and patient-level variables on OCP adherence. Results: Just over half of our participants were highly adherent to OCPs (53.6%), and approximately one-quarter reported recent IPV exposure (25.2%). Women with recent IPV were significantly less likely to be OCP adherent than those without IPV (adjusted odds ratio (AOR) 0.54, 95% confidence interval (CI): 0.32-0.92). Protestant religion was also associated with high OCP adherence (AOR 2.41, 95% CI: 1.24-4.65, compared with no religious affiliation), while younger age groups (18-25 and 26-33 years) were less likely to have high OCP adherence compared with the 34-40 age group (AOR 0.45, 95% CI: 0.20-1.00 and AOR 0.40, 95% CI: 0.18-0.91, respectively). Conclusion: Recent IPV exposure is associated with low OCP adherence among women of reproductive age. ClinicalTrials.gov identifier: NCT02100124.
Keywords: contraceptive adherence; intimate partner violence; oral contraceptive pills; proportion days covered.