Prevalence of undiagnosed HIV in the USHER Trial for the overall sample and by demographic and risk factors.

*Participants who had missing data for three or more of the items related to sexual risk and not reporting risk behavior on other factors were classified as ‘missing’.**A score of 8 or higher is considered as having the alcohol risk behavior. If answers were provided to fewer than 5 questions, the alcohol risk behavior was noted as ‘missing’.***If answers to at least 3 drug-related questions were missing and no other drug-related behavior was reported, the drug behavior was marked ‘missing’.