Primary Outcomes
MSM
A total of 751 participants (751/935, 80.3%) completed at least one follow-up survey and were analyzed to evaluate the effect of the intervention (For the measure of the cluster-level effect of the intervention, the proportion of individuals receiving an HIV test within a city in the intervention arm was 11.62% (95% CI 0.74%-22.50%; Proportion of participants who underwent HIV testing by arm at baseline and during the 4 follow-up periods. We included 751 participants who completed at least 1 of 4 follow-up surveys in this analysis.Results of a linear mixed model to determine the effect of the digital crowdsourced intervention on HIV testing uptake at the city level.Results of a generalized linear mixed model to determine the effect of the digital crowdsourced intervention on HIV testing uptake at the individual level. ICC: interclass correlation coefficient.In addition, the estimated effect of the provision of digital materials alone was not statistically significant (mean difference 5.58%, 95% CI –8.51% to 19.68%; The subgroup analysis showed that the effect of the intervention was similar among MSM who were aged 18 to 30 years (RR 1.44, 95% CI 0.62-3.36) compared to MSM who were aged more than 30 years (RR 2.29, 95% CI 0.93-5.67; interaction test 