Pre-exposure prophylaxis (PrEP) is highly effective in preventing HIV but requires sustained adherence. Conditional economic incentives (CEIs) can improve medication-taking behaviors, yet preferences for programs that employ CEIs to increase PrEP use among male sex workers (MSWs) have not been investigated. We conducted a discrete choice experiment in Mexico City to elicit stated preferences for a CEI-based PrEP adherence program among MSWs. Respondents expressed their preferences for different program characteristics: incentive amount; incentive format; incentive type; and adherence-verification method. We used a random utility logit model to estimate the relative importance of each attribute and estimated willingness-to-pay. MSWs preferred a higher, fixed incentive, with PrEP adherence measured via hair sampling. MSWs were willing to forego up to 21% of their potential maximum CEI amount to ensure receipt of a fixed payment. MSWs are highly willing to accept a CEI-based intervention for PrEP adherence, if offered along with fixed payments.

暴露前预防（PrEP）对于预防艾滋病毒非常有效，但需要持续坚持。有条件经济激励 (CEIs) 可以改善服药行为，但尚未调查男性性工作者 (MSW) 对利用 CEIs 增加 PrEP 使用的计划的偏好。我们在墨西哥城进行了一项离散选择实验，以了解 MSW 对基于 CEI 的 PrEP 依从计划的偏好。受访者表达了他们对不同项目特征的偏好：激励金额；激励形式；激励类型；和遵守验证方法。我们使用随机效用 logit 模型来估计每个属性的相对重要性和估计的支付意愿。 MSW 更喜欢更高的、固定的激励措施，通过头发采样来衡量 PrEP 的遵守情况。 MSW 愿意放弃其潜在最高 CEI 金额的 21%，以确保收到固定付款。如果与固定付款一起提供，MSW 非常愿意接受基于 CEI 的干预措施以促进 PrEP 依从性。