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Author Notes:

Correspondence to: Kristin M. Wall, MS, PhD, 1518 Clifton Road NE, Atlanta, GA 30322 (e-mail: kmwall@emory.edu)

The contents do not necessarily reflect the views of USAID or the United States Government.

The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the article.

The authors have no conflicts of interest to disclose.

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Research Funding:

Supported by the National Institute of Child Health and Development (NICHD R01 HD40125) and National Institute of Mental Health (NIMH R01 66767); with support from the AIDS International Training and Research Program Fogarty International Center (D43 TW001042); the Emory Center for AIDS Research (P30 AI050409); National Institute of Allergy and Infectious Diseases (NIAID R01 AI51231; NIAID R01 AI040951; NIAID R01 AI023980; NIAID R01 AI64060; NIAID R37 AI51231); and the International AIDS Vaccine Initiative.

This study was made possible by the generous support of the American people through the United States Agency for International Development (USAID).

Keywords:

  • Science & Technology
  • Life Sciences & Biomedicine
  • Immunology
  • Infectious Diseases
  • Zambia
  • HIV disease progression
  • longitudinal cohort
  • breastfeeding
  • pregnancy
  • hormonal contraception
  • SUB-SAHARAN AFRICA
  • RANDOMIZED CONTROLLED-TRIAL
  • DISCORDANT COUPLES
  • ANTIRETROVIRAL THERAPY
  • RWANDA
  • MORTALITY
  • INFECTION
  • METAANALYSIS
  • INITIATION
  • CONCORDANT

Hormonal Contraception, Pregnancy, Breastfeeding, and Risk of HIV Disease Progression Among Zambian Women

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Journal Title:

Journal of Acquired Immune Deficiency Syndromes

Volume:

Volume 71, Number 3

Publisher:

, Pages 345-352

Type of Work:

Article | Final Publisher PDF

Abstract:

Background: Some studies suggest that hormonal contraception, pregnancy, and/or breastfeeding may influence rates of HIV disease progression. Methods: From 1994 to 2012, HIV discordant couples recruited at couples' voluntary HIV counseling and testing centers in Lusaka were followed 3-monthly. Multivariate survival analyses explored associations between time-varying contraception, pregnancy, and breastfeeding and 2 outcomes among HIV-positive women: (1) time to death and (2) time to antiretroviral treatment (ART) initiation. Results: Among 1656 female seropositive, male seronegative couples followed for 3359 person-years (PY), 224 women died [6.7/100 PY; 95% confidence interval (CI): 5.8 to 7.6]. After 2003, 290 women initiated ART (14.5/100 PY; 95% CI: 12.9 to 16.2). In a multivariate model of time to death, hormonal implant [adjusted hazard ratio (aHR) = 0.30; 95% CI: 0.10 to 0.98] and injectable (aHR = 0.59; 95% CI: 0.36 to 0.97) were significantly protective relative to nonhormonal method use, whereas oral contraceptive pill (OCP) use was not (aHR = 1.08; 95% CI: 0.74 to 1.57) controlling for baseline HIV disease stage, time-varying pregnancy, time-varying breastfeeding, and year of enrollment. In a multivariate model of time-to-ART initiation, implant was significantly protective (aHR = 0.54; 95% CI: 0.31 to 0.95), whereas OCP (aHR = 0.70; 95% CI: 0.44 to 1.10) and injectable (aHR = 0.85; 95% CI: 0.55 to 1.32) were not relative to nonhormonal method use controlling for variables above, woman's age, and literacy. Pregnancy was not significantly associated with death (aHR = 1.07; 95% CI: 0.68 to 1.66) or ART initiation (aHR = 1.24; 95% CI: 0.83 to 1.86), whereas breastfeeding was protective for death (aHR = 0.34; 95% CI: 0.19 to 0.62) and ART initiation (aHR = 0.49; 95% CI: 0.29 to 0.85). Conclusions: Hormonal implants and injectables significantly predicted lower mortality; implants were protective for ART initiation. OCPs and pregnancy were not associated with death or ART initiation, whereas breastfeeding was protective for both. Findings from this 18- year cohort study suggest that (1) HIV-positive women desiring pregnancy can be counseled to do so and breastfeed and (2) all effective contraceptive methods, including injectables and implants, should be promoted to prevent unintended pregnancy.

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