Factors Associated with Postpartum Use of Long-Acting Reversible Contraception

Abstract Background Contraception use among postpartum women is important to prevent unintended pregnancies and optimize birth spacing. Long-acting reversible contraception (LARC), including intrauterine devices and implants, is highly effective, yet compared to less effective methods utilization rates are low. Objectives We sought to estimate prevalence of LARC use among postpartum women and examine factors associated with LARC use among those using any reversible contraception. Study Design We analyzed 2012-2015 data from the Pregnancy Risk Assessment Monitoring System, a population-based survey among women with recent live births. We included data from 37 sites that achieved the minimum overall response rate threshold for data release. We estimated the prevalence of LARC use in our sample (n=143,335). We examined maternal factors associated with LARC use among women using reversible contraception (n=97,013) using multivariable logistic regression (LARC versus other type of reversible contraception) and multinomial regression (LARC versus other hormonal contraception and LARC versus other non-hormonal contraception). Results The prevalence of LARC use overall was 15.3%. Among postpartum women using reversible contraception, 22.5% reported LARC use, which varied by site, ranging from 11.2% in New Jersey to 37.6% in Alaska. Factors associated with postpartum LARC use versus use of another reversible contraceptive method included: age ≤24 years (adjusted odds ratio [AOR] = 1.43; 95% confidence interval [CI] = 1.33-1.54) and > 35 years (AOR = 0.87; 95 % CI = 0.80-0.96) versus 25-34 years; public insurance (AOR = 1.15; 95% CI = 1.08-1.24) and no insurance (AOR = 0.73; 95% CI = 0.55-0.96) versus private insurance at delivery; having a recent unintended pregnancy (AOR = 1.44; 95% CI=1.34-1.54) or being ambivalent about the recent pregnancy (AOR = 1.29; 95% CI=1.18-1.40) versus recent pregnancy intended; having ≥1 previous live birth (AOR = 1.40; 95% CI = 1.31-1.48) and having a postpartum check-up after recent live birth (AOR = 2.70; 95% CI = 2.35-3.11). Hispanic and non-Hispanic black postpartum women had a higher rate of LARC use (26.6% and 23.4% respectively) compared to non-Hispanic white women (21.5%),and there was significant race/ethnicity interaction with educational level. Conclusions Nearly one in six (15.3%) postpartum women with a recent live birth and nearly one in four (22.5%) postpartum women using reversible contraception reported LARC use. Our analysis suggests that factors such as age, race/ethnicity, education, insurance, parity, intendedness of recent pregnancy, and postpartum visit attendance may be associated with postpartum LARC use. Ensuring all postpartum women have access to the full range of contraceptive methods, including LARC, is important to prevent unintended pregnancy and optimize birth spacing. Contraceptive access may be improved by public health efforts and programs that address barriers in the postpartum period, including increasing awareness of the availability, effectiveness, and safety of LARC (and other methods), as well as providing full reimbursement for contraceptive services, and removal of administrative and logistic barriers.