绵阳城区男男性行为者性伴特征及影响因素

Features and Its Influencing Factors of the Sex Partners of MSM in Mianyang

目的了解绵阳市城区男男性行为者(MSM)性伴现况。方法采用应答者趋动招募抽样法(RDS),在MSM活动场所定时、定点进行性伴及相关因素招募和寻问式匿名现场调查。结果共调查MSM 400人,首次插入性性行为平均(18±3.59)岁。最近6个月与男性发生过性行为占88.4%(352/398),平均(2±3.29)人;买性占4.7%(17/359),平均(1±2.49)人;卖性占2.5%(9/355),平均(4±6.19)人;与女性发生过性关系占18.3%(73/400),平均(1±2.42)人。调查者中不同婚姻状况、性取向、首次插入性行为年龄、认识当地MSM朋友数、性伴居住城市数、近6月男男肛交安全套使用,艾滋病知识是否来自书籍、来自学校,是否知道性伴没有健康问题、是否知道性伴健康状况者,近6个月男男肛交用安全套等因素与男男肛交数有关。多因素Logistic回归分析,最终进入回归模型的有婚姻、认识当地MSM朋友数、首次插入性行为年龄、性伴居住城市数、不知道性伴健康状况共5个(P<0.05),在婚(OR=5.074)、认识当地MSM朋友数≥9人(OR=2.192)、不知道性伴健康状况(OR=1.235)、首次插入性行年龄≤24岁(OR=6.948～9.871)者近6月肛交人数较多,性伴居住城市数≤1个者肛交人数较少。结论绵阳城区MSM首次性行为较早,多种性伴共存,多性伴普遍。

Objective To understand the current situation of the sex partners of men who have sex with men （MSM）. Methods The respondent - driven sampling （RDS） was adopted to recuit respondents, and the anon- ymous self- administered questionnaire were fulfilled by MSM in certain time and place. Results Totally 400 people were investigated, and the average age of the first anal sex was （ 18 ± 3.59） years. Among the 400 people, 88.4% （352/398） of them had sex in the last 6 months with an average of （2 ± 3.29 ） sex partners; 4.7% （17/359） of them had sex with male prostitute with an average number of （1 ＋2.49） ; 2. 5% （9/355） of them sell sex, the average number was （4 ± 6. 19 ） ; 18.3% （73/400） of them had sex with women with an average number of （ 1 ± 2.42）. The number of sex partners was related to different marriage situation, sexual orientation, age of the first time having anal sex, number of local homosexual friends, number of the cities where their companions live, use of condoms in anal sex in the last 6 months, gain of knowledge related AIDS from books or school, aware of the healthy situation of sex partners or not. Through multifactor analysis, the coincidental factors which entered the regression model finally were different marriage situation, number of local homosexual friends, age of the first insertional sex, number of the cities where their sex partners lived, wether understood the healthy situation of sex partners （P 〈 0.05 ）. The MSM who was married （ OR = 5.074） ; who had a number of local homosexual friends more than or equal to 9 （ OR = 5.074） ; who were not aware of the healthy situation of sex partners （ OR = 1. 235 ） ; who had first anal sex at the age of less or equal to 24 （ OR = 6. 948 - 9.817 ） had more sex partners ; who had number of the cities where their sex partners lived less than or equal to 1 （ OR = 0. 254） had less sex partners. Conclusion It is presented that MSM in Mianyang had first sex at young age, and have sex with both men and women, with more than one sex partners.