北京市MSM HIV和梅毒感染与性行为影响因素调查

Survey of HIV and syphilis infection and influential factors assoicated with unprotected anal intercourse in men who have sex with men in Beijing

目的了解北京市男男性行为者(Men who have sex with men,MSM)与固定和临时男性性伴无保护性肛交的情况及其影响因素。方法于2008年3月～6月,在北京市招募MSM进行问卷访谈,了解其社会人口学、高危行为特征,以及心理状况,并采集血样进行HIV抗体、梅毒抗体、HBsAg和HCV抗体检测。结果共调查550名MSM,近1个月分别有86人(15.6%)和62人(11.3%)与固定和临时男性性伴发生无保护性肛交。多因素logistic回归分析结果显示,大学本科及以上文化程度(OR=1.70,95%CI:1.06～2.72)和近3个月与男性性伴同居(OR=2.41,95%CI:1.45～4.02)是MSM与固定男性性伴无保护性肛交的影响因素,近3个月男性性伴数≥10人(OR=4.11;95%CI:2.04～8.30)和近1个月感到悲伤(OR=1.82;95%CI:1.04～3.18)是MSM与临时男性性伴无保护性肛交的影响因素。结论北京市MSM无保护性肛交现象较为普遍,HIV和梅毒感染率高,应采取宣传教育、安全套推广等措施以控制HIV等性传播疾病的流行。

Objective To investigate the prevalence and risk factors of unprotected anal intercourse （UAI） with regular and casual male partners among men who have sex with men （MSM） in Beijing. Methods There 550 ehgible MSM were recruited between March and June in 2008 in Beijing. Data of demographics,risky behaviors and psychological status were collected and blood samples were tested for HIV, syphilis, HBsAg and HCV infection. Results Of the 550 MSM surveyed, 15.6% （86/550） and 11.3% （62/550） MSM reported UAI with regular and casual male partners in the past month respectively. Multivariate logistic regression analysis demonstrated that the level of education at college level or higher （OR=1.70,95%CI： 1.06-2.72） and lived with male sex partners in the past three months （OR=2.41,95%CI：1.45--4.02） were significantly associated with UAI with regular male partners,reported ≥ 10 male sex partners in the past three months （OR=4.11; 95%CI： 2.04-8.30） and felt sad in the past month （OR=1.82; 95%CI：1.04-3.18） were signiticandy associated with UAI with casual male partners. Conclusions UAI,HIV and syphilis infection are common among MSM in Beijing,the work of education, promotion of use of condoms should be vcarried out to interrupt the transmission of HIV and sexually transmitted diseases.