男男性行为人群多性伴行为及影响因素分析

目的了解MSM人群的多性伴情况，分析其影响因素。方法采用“滚雪球”方法，对六安市城区MSM进行匿名问卷调查，收集MSM人群人口学和性伴数及影响因素等资料。使用EpiData3．1软件建立数据库，运用SPSSl8．0进行统计分析。结果59．5％的调查对象有2个以上男性肛交性伴，单因素分析显示：HIV风险感知（x2=4．946，P=0．026）是影响因素。Logistic回归分析结果显示：HIV风险感知（OR=2．091，95％CI=1．084～4．035）是独立影响因素；56．3％的调查对象有2个以上男性口交性伴，单因素分析显示：年龄（x2=3．456，P=0．036）、知晓艾滋病相关知识（X2=4．52，P=0．034）及是否有女性性伴（x2=8．071，P=0．04）是影响因素。Logistic回归分析结果显示：有女性性伴（OR=0．278，95％CI=0．11—0．702）是独立影响因素。结论目前开展的干预服务对该人群的多性伴行为无明显影响，可以尝试从HIV风险感知角度进行有针对性干预，以降低其艾滋病感染风险。

Influencing factors associated with multi - partner homosexual behaviors among MSM

Objective To understand the situation of multi - partner homosexual behavior among men who have sex with men （ MSM） , and explore the influencing factors associated with the number of sex partners among MSM. Methods A- nonymous questionnaire which include data of population demography, number of sexual partners and other information was conducted among MSM in downtown area of Lu~m city by using ＂Snowball＂ sampling. Database was established by EpiData 3.1 and data were analyzed by SPSS 18.0. Results 59.5% of MSM reported having had more than 2 sex partner for anal sex, Univariate analysis showed the HIV risk perception （X2 = 4. 946, P = 0.026 ） was the influencing factor. The logistic regression analysis indicated that the HIV risk perception （ Impossible and little possible} （ OR = 2. 091,95 % CI： 1. 084 4.035） was the independent risk factor for anal sex multi -partner; 56.3% of MSM reported having had more than 2 sex partner for oral sex, which was associated with age （X2= 3.456, P =0.036}, HIV knowledge （X2 =4. 52, P =0.034） and whether there being female partner （X2 = 8. 071, P = 0.04 ）. The logistic regression analysis indicated that there being fe- male partner （OR = 0. 278, 95% CI：O. 11 - 0.702） was the independent risk factors for oral sex multi -partner. Conclu- sion Intervention services had not exerted obvious impacts on multiple male sex - partners~ intervention targeted to im- provement of HIV risk perception might be helpful to reducing the risk of being infected.