Effects of drug use on sexual risk behavior: results of an HIV outreach and education program.

We evaluated the effects on drug use and sexual risk of an HIV intervention for out-of-treatment drug users, and assessed the effect of drug use on unprotected sex with main and non-main partners. The intervention significantly reduced unprotected sex with a main partner, but did not affect drug use or unprotected sex with non-main partners. Participants who stopped using drugs by follow-up were less likely to have unprotected sex with both main and other partners.