Pooled HIV prevalence among men who engage in transactional sex by region, country, and definition of transactional sex.

1Analyses restricted to individual studies reporting ≥50 participants and biological assay-confirmed HIV prevalence; 2Type-3 P-value from random effects meta-regression adjusted for country-level HIV prevalence among males aged 15+ (presented for regions). N = number of subjects; k = number of studies; 95% CI = 95% Confidence Interval.