LAUSR

Purpose: We estimated sexual orientation-related disparities in contraceptive outcomes among women across multiple dimensions of sexual orientation. Methods: Using pooled National Survey of Family Growth data, 2011-2017, we performed multivariable logistic and multinomial regression analyses (adjusted for race/ethnicity, age, education, and income) to estimate the independent associations between multiple components of sexual orientation (sexual identity, behavior, and attraction) and two contraceptive outcomes-any contraceptive use and type of method used at last intercourse with a male partner. Results: Women who reported any attraction to females had increased odds of having used any contraceptive method compared with those only attracted to males (adjusted odds ratio [AOR] 1.22, 95% confidence interval [CI] 1.03-1.44). For the type of contraception outcome, we present age-stratified results due to effect modification. Among 15- to 25-year-olds, bisexual-identified females had higher odds of having used a low efficacy method compared with heterosexual females (AOR 1.49, 95% CI 1.01-2.19). Among 26- to 35-year-olds, women with male and female partners had increased odds of having used a low efficacy method compared with women with male partners only (AOR 3.31, 95% CI 1.46-7.51). Conclusion: Sexual minority women, defined by sexual identity and sexual behavior, may be at increased risk for unintended pregnancy due to increased use of low efficacy contraceptive methods compared with their non sexual minority peers. These outcomes vary by age group.