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J Acquir Immune Defic Syndr. 2016 Nov 1;73(3):313-322.

Intimate Partner Violence and Adherence to HIV Pre-exposure Prophylaxis (PrEP) in African Women in HIV Serodiscordant Relationships: A Prospective Cohort Study.

Author information

1
*Department of Epidemiology, University of Washington, Seattle, WA; †Department of Medicine and Center for Global Health, Massachusetts General Hospital, Boston, MA; ‡Department of Global Health and Social Medicine, Harvard Medical School, Boston, MA; Departments of §Global Health; ‖Medicine, University of Washington, Seattle, WA; ¶Kenya Medical Research Institute, Nairobi, Kenya; #Division of Global Health Equity, Department of Medicine, Brigham and Women's Hospital, Boston, MA; **Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco, CA; ††Centers for Disease Control and Prevention, Atlanta, GA; ‡‡Department of Obstetrics and Gynaecology, University of Nairobi, Nairobi, Kenya; §§Department of Medicine, University of Manitoba, Winnipeg, Canada; ‖‖Kabwohe Clinical Research Center, Kabwohe, Uganda; ¶¶Department of Reproductive Health, Moi University, Eldoret, Kenya; and ##Kenyatta National Hospital, Nairobi, Kenya.

Abstract

BACKGROUND:

Intimate partner violence (IPV) is associated with higher HIV incidence, reduced condom use, and poor adherence to antiretroviral therapy and other medications. IPV may also affect adherence to pre-exposure prophylaxis (PrEP).

METHODS:

We analyzed data from 1785 HIV-uninfected women enrolled in a clinical trial of PrEP among African HIV serodiscordant couples. Experience of verbal, physical, or economic IPV was assessed at monthly visits by face-to-face interviews. Low PrEP adherence was defined as clinic-based pill count coverage <80% or plasma tenofovir levels <40 ng/mL. The association between IPV and low adherence was analyzed using generalized estimating equations, adjusting for potential confounders. In-depth interview transcripts were examined to explain how IPV could impact adherence.

RESULTS:

Sixteen percent of women reported IPV during a median of 34.8 months of follow-up (interquartile range 27.0-35.0). Overall, 7% of visits had pill count coverage <80%, and 32% had plasma tenofovir <40 ng/mL. Women reporting IPV in the past 3 months had increased risk of low adherence by pill count (adjusted risk ratio 1.49, 95% confidence interval: 1.17 to 1.89) and by plasma tenofovir (adjusted risk ratio 1.51, 95% confidence interval: 1.06 to 2.15). Verbal, economic, and physical IPV were all associated with low adherence. However, the impact of IPV diminished and was not statistically significant 3 months after the reported exposure. In qualitative interviews, women identified several ways in which IPV affected adherence, including stress and forgetting, leaving home without pills, and partners throwing pills away.

CONCLUSIONS:

Women who reported recent IPV in the Partners PrEP Study were at increased risk of low PrEP adherence. Strategies to mitigate PrEP nonadherence in the context of IPV should be evaluated.

PMID:
27243900
PMCID:
PMC5065369
DOI:
10.1097/QAI.0000000000001093
[Indexed for MEDLINE]
Free PMC Article

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