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Alcohol Use and High-Risk Sexual Behavior Among Men Who Have Sex
With Men: The Effects of Consumption Level and Partner Type
Peter A. Vanable
Syracuse University David J. McKirnan
University of Illinois at Chicago
Susan P. Buchbinder
San Francisco Department of Public Health Bradford N. Bartholow
Centers for Disease Control and Prevention
John M. Douglas Jr. and Franklyn N. Judson
Denver Public Health Department Kathleen M. MacQueen
Centers for Disease Control and Prevention
Alcohol use may increase HIV sexual risk behavior, although findings have varied across study
populations and methods. Using event-level data from 1,712 seronegative men who have sex with men,
the authors tested the hypothesis that social context would moderate the effect of alcohol consumption
on unprotected anal sex (UAS). For encounters involving a primary partner, rates of UAS did not vary
as a function of alcohol use. However, consumption of 4 or more drinks tripled the likelihood of UAS
for episodes involving a nonprimary partner. Thus, the effects of alcohol vary according to the context
in which it is used. Interventions to reduce substance-related risk should be tailored to the demands of
maintaining sexual safety with nonprimary partners.
Key words: HIV, AIDS, alcohol use, sexual risk behavior, partner type, social context, gay men
Improved treatments for HIV have led to declines in AIDS-
related morbidity and mortality and tangible improvements in
quality of life for many people living with HIV. However, new
cases of HIV—estimated at 40,000 per year in the United States—
have remained constant in recent years (Karon, Fleming, Steketee,
& De Cock, 2001), indicating that additional prevention efforts are
necessary to reduce transmission risk behaviors among men and
women at greatest risk for HIV. Trends in HIV epidemiology
among men who have sex with men (MSM) are of particular
concern. MSM account for 42% of all new infections in the United
States—more than any other group (Centers for Disease Control
and Prevention, 2001)—and recent findings point to an alarming
resurgence of high-risk sexual behavior, sexually transmitted dis-
eases (STDs), and new HIV infections among MSM (Ekstrand,
Stall, Paul, Osmond, & Coates, 1999; Katz et al., 2002; Vanable,
Ostrow, McKirnan, Taywaditep, & Hope, 2000; Wolitski, Valdis-
erri, Denning, & Levine, 2001). Further, a recent probability
sample of MSM residing in four major urban epicenters (Catania
et al., 2001) found an HIV prevalence rate of 17% among all MSM
and extremely high rates among MSM who are African American
(29%), who are heavy drug users (32%), or who are less well
educated (37%). Ongoing surveillance demonstrates a need for a
renewed focus on intervention-oriented research to stem the tide of
new infections among MSM.
Alcohol use proximal to sexual activity has been identified as a
potential contributor to risky sexual behavior among MSM and
other at-risk populations. Several studies have pointed to a modest
association between substance use and seroconversion among
MSM (Buchbinder et al., 1996; Chesney, Barrett, & Stall, 1998;
Gilbart et al., 2000; Penkower et al., 1991). Further, global asso-
ciation studies that examined the relationship between general
drinking patterns (i.e., average quantity and frequency of alcohol
use) and risky sexual behavior consistently have pointed to higher
rates of sexual risk behavior among people who also report heavy
drinking (Stall & Purcell, 2000). However, event-level studies
involving MSM (Gillmore et al., 2002; Weatherburn et al., 1993)
and other at-risk populations (Scheidt & Windle, 1996; Weinhardt,
Carey, Carey, Maisto, & Gordon, 2001) have not consistently
detected an association between alcohol consumption prior to
Peter A. Vanable, Department of Psychology and Center for Health and
Behavior, Syracuse University; David J. McKirnan, Department of Psy-
chology, University of Illinois at Chicago; Susan P. Buchbinder, San
Francisco Department of Public Health; Bradford N. Bartholow and Kath-
leen M. MacQueen, Centers for Disease Control and Prevention (CDC),
Atlanta, Georgia; John M. Douglas Jr. and Franklyn N. Judson, Denver
Public Health Department, Denver, Colorado.
Kathleen M. MacQueen is now at Family Health International, Durham,
North Carolina.
This study was supported by CDC Cooperative Agreements U64/
CCU802715, U64/CCU502714, and U64/CCU900523 and was funded by
the CDC and the National Institute for Allergies and Infectious Diseases.
We gratefully acknowledge the important contributions to this study made
by Julie Doetsch, Kelly Kay, Paul O’Mally, and Kent Penley. Thanks are
also extended to Michael Carey, Rae Littlewood, Stephen Maisto, and
Joshua Smyth for their helpful comments on an earlier version of this
article.
Correspondence concerning this article should be addressed to Peter A.
Vanable, Department of Psychology, Syracuse University, 430 Huntington
Hall, Syracuse, NY 13244-2340. E-mail: pvanable@psych.syr.edu
Health Psychology Copyright 2004 by the American Psychological Association
2004, Vol. 23, No. 5, 525–532 0278-6133/04/$12.00 DOI: 10.1037/0278-6133.23.5.525
525
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