Estimating efficacy in a randomized trial with product nonadherence: application of multiple methods to a trial of preexposure prophylaxis for HIV prevention.


Antiretroviral preexposure prophylaxis (PrEP) for persons at high risk of human immunodeficiency virus infection is a promising new prevention strategy. Six randomized trials of oral PrEP were recently conducted and demonstrated efficacy estimates ranging from 75% to no effect, with nonadherence likely resulting in attenuated estimates of the protective… (More)
DOI: 10.1093/aje/kwv202

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