绵阳市年轻男男性行为者性行为特征及肛交多性伴影响因素

目的了解年轻男男性行为者(YMSM)性行为特征现状,分析肛交多性伴影响因素。方法以四川省绵阳市15～24周岁YMSM为对象,用滚雪球抽样法招募调查对象,进行社会人口学及性行为等调查和血清学检测。肛交多性伴影响因素单因素分析用χ2检验,多因素分析用非条件Logistic回归。结果共回收有效问卷362份,近6个月肛交63.8%、异性性伴7.7%、男性商业性伴8.8%、固定性伴74.7%、偶然性伴53.3%,多性伴32.3%,性角色插入方31.3%、被插入方41.0%、均可27.6%。多性伴者HIV-抗体阳性率15.4%,高于无多性伴的6.1%(P=0.004)。多因素分析结果显示,社区朋友>10人、曾自杀未遂、浴室/公园/互联网型寻找性伴、近6个月偶然性伴、近6个月固定性伴无保护肛交是多性伴危险因素,年龄>18岁、文化程度大专及以上是保护因素(P<0.05)。结论 YMSM具一定性行为特征,多性伴与人口学特征、社会及性行为相关联,应针对性开展行为干预。

Characteristics of sexual behaviors and multiple anal sexual partners as a related-risk factor among young men who have sex with men in Mianyang

Objective To investigate characteristics of sexual behaviors among young men who have sex with men (YMSM), and to analyze multiple anal sexual partners as a related-risk factor. Methods A questionnaire survey and serological test were conducted in YMSM in Mianyang at the age between 15 and 24 years by snowball sampling method. To analyze multiple anal sexual partner as a related-risk factor, we use χ² test to implement single-factor analysis and non-conditional Logistic regression for multiple-factor analysis. Results A total of 362 valid questionnaires were took back. In nearly 6 months, 63.8% of the subjects had anal sex, 7.7% had heterosexual sex partners, 8.8% had male commercial sex partners, 74.7% had fixed sex partners, 53.3% had casual sex partners, and 32.3% had multiple sex partners. And 31.3% were inserted, 41.0% were receptive, and 27.6% were both inserted and receptive in sex roles. Subjects with multiple sexual partners had a higher infection rate (15.4%) than other groups 6.1%(P = 0.004). Multiple Logistic regression analysis showed that having more than 10 community friends, attempting suicide, seeking sex partners in bathhouses, in parks or on the Internet, having casual sex partners, and having fixed sex partners with unsafe anal sex in nearly 6 months were risk factors, while age older than 18 years, and literacy level beyond associated degree were protect factors of having multiple sex partners (P<0.05). Conclusion YMSM have some special sexual behaviors and having multiple sex partners are connected with features of demology, sociology and sexual behavior, as a result correlative behavior intervene should be implemented.