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目的了解年轻男男性行为人群(MSM)艾滋病病毒(HIV)感染情况及其影响因素。方法分别于2009-2011年,采用应答驱动抽样方法(RDS),在北京市18～25岁年轻MSM中开展横断面调查,采用计算机辅助问卷,调查内容包括社会人口学、性行为特征、HIV检测和对安全性行为的认知等。结果在474名调查对象中,HIV感染率为7.4%,其中2009年、2010年和2011年的感染率分别为6.4%、8.4%和7.5%。多因素Logistic回归分析结果显示,HIV感染的影响因素为:自报HIV感染状况正确[比值比(OR)=0.06,95%可信区间(CI):0.02～0.18]、对安全性行为的认知高(OR=0.44,95%CI:0.20～0.98)、近1年有过性病症状(OR=6.78,95%CI:1.92～23.95)和梅毒抗体阳性(OR=4.19,95%CI:1.49～11.80)。对安全性行为的认知量表内部一致性检验克朗巴赫系数为0.92。结论应促进对安全性行为的认知和性病的预防和治疗,以遏制HIV在年轻MSM中的快速传播。
Objective To investigate the prevalence of HIV in young MSM and its influencing factors. METHODS: Cross-sectional surveys were conducted in response-driven sampling method (RDS) from 2009 to 2011 in young MSM aged 18-25 in Beijing using computer-aided questionnaires. The survey included social demography, sexual behavior characteristics, HIV testing And awareness of safety behavior. Results Among the 474 respondents, the HIV infection rate was 7.4%, of which the infection rates in 2009, 2010 and 2011 were 6.4%, 8.4% and 7.5% respectively. The multivariate Logistic regression analysis showed that the factors affecting HIV infection were as follows: self-reported HIV infection was correct (odds ratio (OR) = 0.06, 95% confidence interval (CI): 0.02-0.18] (OR = 0.44, 95% CI: 0.20-0.98) and had STD symptoms in the past year (OR = 6.78, 95% CI: 1.92-23.95) and syphilis antibody positive (OR = 4.19, 95% CI: 1.49 ~ 11.80). Cognitive Scale for Safety Behavior The Cronbach’s coefficient for internal consistency testing was 0.92. Conclusions The recognition of safe sex behaviors and the prevention and treatment of STDs should be promoted to curb the rapid transmission of HIV in young MSM.