Prestage Garrett, Grierson Jeffrey, Bradley Jack, Hurley Michael, Hudson Jeff
National Centre in HIV Epidemiology and Clinical Research, 376 Victoria Street, Darlinghurst, NSW 2010, Australia.
Sex Health. 2009 Dec;6(4):310-7. doi: 10.1071/SH09014.
Drug use has been associated with risk behaviour among gay men. We examined the use of drugs and sexual risk behaviour among homosexually-active men who engaged in group sex in Australia.
We used an anonymous, self-complete survey about participants' most recent occasion of group sex with other men and in-depth interviews with a small number of these survey participants. The 746 men who reported having engaged in group sex within the previous 6 months were included in these analyses.
Among 746 men who engaged in group sex within the previous 6 months, 63.0% reported using illicit drugs at the group sex encounter. Men commonly reported using drugs specifically to enhance their sexual experience and to intensify the pleasure of that experience. After controlling for each drug type and other risk factors, only use of methamphetamine (odds ratio = 1.74, confidence interval = 1.06-2.88, P = 0.030) and having more than five drinks (odds ratio = 2.41, confidence interval = 1.34-4.33, P = 0.003) were independently associated with unprotected anal intercourse with non-HIV seroconcordant partners in multivariate analysis.
Methamphetamine and heavy alcohol use are associated with increased sexual risk behaviour among men who engage in group sex. Within more 'adventurous' gay community subcultures, drug use is often for the explicit purpose of enhancing the sexual experience and this complex relationship may be key to understanding HIV risk among these men.
吸毒与男同性恋者的危险行为有关。我们调查了在澳大利亚参与群体性行为的性活跃男性中的吸毒情况和性危险行为。
我们采用了一项关于参与者最近一次与其他男性进行群体性行为的匿名自填式调查，并对少数参与调查的人员进行了深入访谈。在过去6个月内报告有过群体性行为的746名男性被纳入这些分析。
在过去6个月内有过群体性行为的746名男性中，63.0%报告在群体性行为时使用过非法药物。男性普遍表示使用药物是为了特别增强他们的性体验并强化这种体验的快感。在控制了每种药物类型和其他风险因素后，在多变量分析中，仅使用甲基苯丙胺（比值比=1.74，置信区间=1.06-2.88，P=0.030）和饮酒超过五杯（比值比=2.41，置信区间=1.34-4.33，P=0.003）与与非HIV血清学一致的伴侣进行无保护肛交独立相关。
甲基苯丙胺和大量饮酒与参与群体性行为的男性中性危险行为增加有关。在更“冒险”的男同性恋社区亚文化中，吸毒往往是为了明确增强性体验的目的，这种复杂关系可能是理解这些男性中HIV风险的关键。
