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目的了解男男性行为人群(MSM)性行为特征,分析多性伴影响因素。方法以四川省绵阳市辖区MSM为对象,在固定场所,用滚雪球抽样法进行抽样,对抽样人群进行问卷调查和血清学检测,采用单、多因素分析方法对MSM多性伴影响因素进行分析。结果共调查1 271人,年龄中位数为24岁,文化程度初中及以下占13.9%(177人)、高中及以上占86.1%(1 094人),婚姻状况未婚占81.9%(1 041人)。最近6个月男性肛交发生率为88.2%、商业性行为发生率为1.3%、异性性行为发生率为8.6%。最近1次肛交、最近6个月肛交每次均使用安全套的比例分别为92.9%、82.7%。近6个月肛交中位数为2次,多性伴发生率为24.2%。寻找性伴场所以网络型为主,占72.5%。多因素分析结果显示:多性伴发生可能性中,文化程度高中及以上者是初中及以下者的0.539倍,认识当地MSM朋友数5~9、≥10人分别是<5人的2.224、3.231倍,进入MSM圈子时间>1年是≤1年的2.279倍,有压力感受者是无压力感受者的2.422倍,近1周肛交数为2、≥3次者分别是≤1次者的1.931、3.231倍,HIV感染者是无感染者的1.938倍。结论 MSM多种性伴类型并存,以网络型性伴为主。文化程度、社会活动网、进入MSM圈子时间及压力感受、HIV感染与多性伴相关。
Objective To understand the sexual behaviors of MSM and analyze the influential factors of MSM. Methods MSM in Mianyang City of Sichuan Province was used as a sampling site in a fixed place. Samples were taken by snowball sampling method. Questionnaires and serological tests were performed on the sampled population. The influencing factors of MSM polygamy were analyzed by single and multiple factor analysis. Results A total of 1 271 persons were surveyed, with a median age of 24 years. The educational level of junior high school and below accounted for 13.9% (177), high school and above 86.1% (1,094) and marital status unmarried 81.9% (1041 ). In the recent 6 months, the incidence of anal intercourse in men was 88.2%, that of commercial sex was 1.3%, and that of heterosexual sex was 8.6%. Recent anal sex, anal sex every 6 months, the proportion of each use of condoms were 92.9%, 82.7%. In the past 6 months, the median of anal intercourse was 2 and the incidence of polygamous was 24.2%. Looking for partner places network-based, accounting for 72.5%. Multivariate analysis showed that among the odds of having multiple sexual partners, those with high school education or above were 0.539 times of those with junior high school education or below, the number of local MSM friends was 5 ~ 9, and those with ≥10 were 2.224 and 3.231 Times, into the MSM circle time> 1 year is 2.279 times less than 1 year, pressure-sensitive recipients are 2.422 times the pressure-sensitive, anal 1 is the number of 2 weeks, ≥ 3 times were ≤ 1 times 1.931 , 3.231 times, 1.938 times that of HIV-infected persons without infection. Conclusions MSM coexistence of various types of partners, mainly to network partners. Educational level, social activities network, into the MSM circle of time and feeling of stress, HIV infection and more sexual partners.