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Unprotected Anal Intercourse Associated With Recreational Drug Use Among Young Men Who Have Sex With Men Depends on Partner Type and Intercourse Role

Rusch, Melanie MSc*†; Lampinen, Thomas M. PhD*†; Schilder, Arn; Hogg, Robert S. PhD*†

Sexually Transmitted Diseases: August 2004 - Volume 31 - Issue 8 - p 492-498
doi: 10.1097/01.olq.0000135991.21755.18
Article

Objective: The objective of this study was to measure associations of unprotected anal intercourse (UAI) and substance use by sexual partner (regular vs. casual) and role [insertive (I) vs. receptive (R)].

Goal: The goal of this study was to identify determinants of the association of specific drugs and UAI.

Study: We conducted a prospective study of young men who have sex with men (MSM), 1997–2002. Odds ratios (ORs) for association of substance use and UAI during the previous year were adjusted for age and calendar year.

Results: UAI was significantly associated with sexual situation-specific use of marijuana (OR, 1.43), crystal methamphetamine (OR, 1.75), ecstasy (OR, 1.88), and ketamine (OR, 2.17); global use associations were similar. Situation-specific associations with alcohol (OR, 1.93) and γ-hydroxybutyrate (GHB; OR, 1.98) were not seen with global measures. GHB and ketamine were specifically associated with IUAI with regular partners, and methamphetamine with RUAI with casual partners.

Conclusion: Type of drug use measure, partner, and role are important determinants of the association of specific substances and UAI.

Among young men who have sex with men, associations of substance use with unprotected anal intercourse depend on whether the partner type is regular versus casual and the intercourse insertive versus receptive.

From the *University of British Columbia, Department of Health Care and Epidemiology, and the †BC Centre for Excellence in HIV/AIDS, Vancouver, British Columbia, Canada

Correspondence: Thomas M. Lampinen, PhD, BC Centre for Excellence in HIV/AIDS, St. Paul’s Hospital, 608-1081 Burrard St., Vancouver, BC, Canada, V6Z 1Y6. E-mail: tlamp@hivnet.ubc.ca

Received for publication January 13, 2004, and accepted March 23, 2004.

© Copyright 2004 American Sexually Transmitted Diseases Association