绵阳市2013年男男性行为者安全套使用及影响因素分析

Analysis of the factors affecting condom use among men who have sex with man in Mianyang city in 2013

目的了解绵阳市男男性行为者（MSM）安全套使用现状及影响因素。方法以绵阳市6县2区1市MSM为调查对象,在知情同意下,应用滚雪球抽样方法于2013年4~10月期间招募调查对象,采取无记名自填式问卷进行行为学调查,同时对每一位调查对象采集5m L静脉血标本送实验室作艾滋病抗体和梅毒检测。结果 861名MSM在最近的6个月,发生男性肛交、商业性行为、异性性行为的比例分别为89.1%、2.9%和7.9%;在上述的三种类型的性行为中,最近1次的性行为使用安全套的比例分别有89.5%、84.0%、41.2%,不同类别性行为安全套使用率差异有统计学意义（P〈0.001）,异性性行为最低。近6月男性肛交未坚持使用安全套者HIV抗体、梅毒感染率均较坚持使用者高（P值分别为0.011、0.002）。多因素Logistic回归分析结果：年龄、艾滋病知识知晓、近1年做过HIV检测、寻找性伴地方、寻找性伴场所、HIV感染、梅毒感染是MSM近6月男性肛交安全套坚持使用率的独立影响因素。结论绵阳市的MSM安全套坚持使用率不高,其影响因素与人口学特征、艾滋病知识、预防服务、性伴寻找方式和HIV、梅毒感染相关。

Objective To understand the factors affecting the condom use among men who have sex with men（MSM）.Methods Eight hundred and sixty-one MSM in 6 counties, 2 districts and a town in Mianyang city from April to October2013 were selected by snowball sampling for anonymous questionnaire with informed consent.Besides,5m L renal blood wastaken from each of the subject for laboratory test of HIV and syphilis. Results The proportions of anal sex, commercial sexand heterosexual sex of the MSM in the last six months were 89.1%,2.9%,7.9%. The proportions of condom use in the last sexof the three sexual behaviors were 89.5%, 84.0%, 41.2%,respectively exhibiting significant differences in condom use amongdifferent sexual behviors（P=0.000）, the lowest use rate was found in heterosexuality. The positive rates for HIV and syphislis inanal sex MSM insisting using condoms in the last sis moths were lowere than those without insisting using condoms（ P=0.011,0.002）. Results of multiple Logistic regression analysis revealed that age, HIV/AIDS knowledge,with HIV rest in a recentyear, partners place, looking for partners place, HIV infection, syphilis infection were the independent factors influencingcondom use rate by MSM during anal sex in the last six months. Conclusion The condom use rate by MSM in Miangyang cityis not high, and the condom use is associated with demographic characteristics, AIDS knowledge, preventive services, ways oflooking for partners, HIV and syphilis infection.