Participants’ sexual behavior history and HIV-relevant psychosocial characteristics at baseline.
Note: Standardized difference was calculated using the stddiff command [Six (8.6%) participants across both arms dropped out of the study before Week 12. The overall attrition rates were 7.1% at Week 4, and 8.6% at Week 8 and Week 12, and were not statistically significantly different between the two study groups. There was no statistically significant difference in baseline characteristics between the retained and lost-to-follow-up participants, except participants who did not complete all study follow-up points had higher PrEP stigma than those retained (mean = 2.89 vs. 2.00, p = 0.04). During the study course, two (2.9%) participants tested HIV-positive before PrEP initiation (one by the lab tests required for PrEP prescription and the other by self-test), and were referred to the HIV antiretroviral treatment (ART) clinic at the study hospital with the participant’s permission. Eighteen participants (12 from the mini-app group and 6 from the control) received qualitative interviews (