Increase In Single-Tablet Regimen Use and Associated Improvements In Adherence-Related Outcomes In HIV-Infected Women. The use of single-tablet ART regimens and its implications on adherence among HIV-infected women have not been well-described. Participants were enrolled in the Women's Interagency HIV Study (WIHS), a longitudinal study of HIV infection in U.S. women. We examined semiannual trends in single-tablet regimen use and ART adherence, defined as self-reported 95% adherence in the past 6 months, during 2006-2013. In a nested cohort study, we assessed the comparative effectiveness of a single-tablet versus a multiple-tablet regimen with respect to adherence, virologic suppression, quality of life, and AIDS-defining events, using propensity score matching to account for demographic, behavioral, and clinical confounders. We also examined these outcomes in a subset of women switching from a multiple- to single-tablet regimen, using a case-crossover design.
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