The Association of Socioeconomic Status and Use of Crack/Cocaine With Unprotected Anal Sex in a Cohort of Men Who Have Sex With Men in Rio de Janeiro, Brazil

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Abstract
To evaluate the relation between illicit drug use, sexual practices, and socioeconomic status, we analyzed data from the baseline interview of a cohort of 675 men who have sex with men conducted from 1994 to 1999 in Rio de Janeiro, Brazil. Bivariate analyses of factors associated with crack/cocaine use with sex revealed that men who reported crack/cocaine use were significantly ( p <.05) more likely than men who did not report drug use to be unemployed (42.7% vs. 29.1%), to have an income of <$250 per month (70.7% vs. 60.9%), to have <8 years of education (69.5% vs. 50.9%), to report bisexual activity (81.7% vs. 41.7%), and to engage in commercial sex (72.0% vs. 37.9%). Multivariate analysis of factors associated with unprotected anal sex with casual male partners in the last 6 months demonstrated that the following variables were associated with this outcome: an income <$250 per month (adjusted odds ratio [AOR] = 1.73, 95% confidence interval [CI]: 1.04-2.87), less than 8 years of education (AOR = 2.21, CI: 1.38-3.53), a greater sense of vulnerability (AOR = 2.58, CI: 1.54-4.33), a willingness to participate in vaccine trials (AOR = 1.91, CI: 1.20-3.05), and use of crack/cocaine (AOR = 1.91, CI: 1.05-3.46). Our findings suggest that HIV prevention programs for these men need to address drug use and how drug use may influence sexual behaviors.