Both the AUDIT-C and PEth sample and the AUDIT-C and ADH1B variant subset were mostly male (95%), with a median age of 52 years at blood sampling, and about 65% were HIV+ (Table 1). Nearly three-fourths of the overall sample were AA. Agreement between self-report and genetic markers for race (kappa=0.85) and sex (kappa=0.98) was excellent.
