Cost-Effectiveness of HIV Pre-exposure Prophylaxis Among Heterosexual Men in South Africa A Cost-Utility Modeling Analysis

Michelle Vogelzang, Fern Terris-Prestholt, Peter Vickerman, Sinead Delany-Moretlwe, Danielle Travill, Matthew Quaife

Introduction: 

Heterosexual men are not considered a key population in the HIV response and are mostly absent from pre-exposure prophylaxis (PrEP) studies to date. Yet, South African men face considerable HIV risk. We estimate the incremental cost-effectiveness of providing oral PrEP, injectable PrEP, or a combination of both to heterosexual South African men to assess whether providing PrEP would efficiently use resources.

Methods: 

Epidemiological and costing models estimated the one-year costs and outcomes associated with PrEP use in 3 scenarios. PrEP uptake was estimated for younger (aged 18–24) and older (aged 25–49) men using a discrete choice experiment. Scenarios were compared with a baseline scenario of male condom use, while a health system perspective was used to estimate discounted lifetime costs averted per HIV infection. PrEP benefit was estimated in disability-adjusted life years (DALYs) averted. Uncertainty around the estimated incremental cost-effectiveness ratios (ICERs) was assessed using deterministic and probabilistic sensitivity analyses.

Results: 

No PrEP intervention scenarios were cost-effective for both age groups at a willingness-to-pay threshold of $1175/DALY averted. The lowest ICER ($2873/DALY averted) was for the provision of oral PrEP to older men, although probability of cost-effectiveness was just 0.26%. Results found that ICERs were sensitive to HIV incidence and antiretroviral coverage.

Conclusions: 

This study estimates that providing PrEP to heterosexual South African men is not cost-effective at current cost-effectiveness thresholds. Given the ICERs' sensitivity to several variables, alongside the heterogeneity of HIV infection among South African men, PrEP may be cost-effective for older men with high incidence and other subgroups based on locality and race. We recommend further investigation to better identify and target these groups.

May 18, 2020
Year of publication
2020
Resource types
Journal and research articles
Countries
Tags
implantable PrEP, heterosexual HIV transmission

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