The specific aims of the 5-year study are to:
1. identify the covariates of baseline substance abuse and sexual risks (including demographics, social risk measures, peer norms, abuse history, and mental health status) among a sample of 750 heterosexually active, not-in-treatment, club and prescription drug users ages 18 to 39 in Miami, Florida.
2. evaluate, through random assignment, the relative effectiveness of two intervention conditions and a waitlist control in reducing sex risks and drug use, as measured at 3-, 6- and 12-month follow-ups:
* Arm 1, an interviewer-administered comprehensive health and social risk assessment intervention (CAPI Intervention) similar to the baseline instrument used in the parent grant;
* Arm 2, an identical self-administered comprehensive assessment intervention (ACASI Intervention); and
* Arm 3, a waitlist control condition (Control). Outcome measures, including past 90-day counts of unprotected sex acts and days' drug use, will be obtained from brief risk behavior inventories at baseline and follow-ups.
3. conduct qualitative process evaluation research with 40 participants in each study arm to contextualize the study findings and intervention outcomes.
