Applying user preferences to optimize the contribution of HIV self-testing to reaching the “first 90” target of UNAIDS Fast-track strategy: results from discrete choice experiments in Zimbabwe

New HIV testing strategies are needed to reach the United Nations’ 90-90-90 target. HIV self-testing (HIVST) can increase uptake, but users’ perspectives on optimal models of distribution and post-test services are uncertain. We used discrete choice experiments (DCEs) to explore the impact of service characteristics on uptake along the testing cascade.