男男性行为者社会网络及性行为特征的研究

Characteristics of Social Networks and Sexual Behaviors among Men Who Have Sex with Men

[目的]了解男男性行为者（men who have sex with men,MSM）人群社会网络及性行为特征,为MSM人群干预提供参考。[方法]采用统一设计的问卷进行面对面调查,并用描述性、卡方检验等方法进行分析。[结果]151名被调查对象拥有128个社交网络;网络大小为2~6个节点,其中≥4个节点的占32.93%;网络密度为0.40~1.00,中位数为1.00;社会网络成员中,男性占85.86%,≤30岁者占73.73%,大学及以上文化程度者占49.93%,被调查对象与社交对象年龄、文化程度的构成差异无统计学意义。297名社交对象中,属于朋友或同学者占61.62%,同事占15.15%,性伴占12.12%,亲属占11.11%;56.23%是MSM;24.58%曾与被调查对象发生性行为,其中76.71%在过去6个月发生过性关系。被调查对象首次与男性发生性行为的年龄为13~40岁,平均（22.73±5.14）岁;在过去6个月中,男性伴个数为1~101个,中位数为2个;60.93%有2个以上男性伴,与固定男性伴、多次男性伴、偶遇男性伴、商业男性伴、异性性伴不安全性行为发生率分别为51.65%、46.05%、36.84%、75.00%和53.33%。[结论]MSM人群多性伴、无保护性行为普遍,社会网络是艾滋病危险行为扩散的重要影响因素,应根据各地区网络社交的特点,开展针对性艾滋病防治。

[Objective] To learn about the characteristics of social networks and sexual behaviors of men who have sex with men（MSM）,and to provide references for high risk sexual behavior intervention.[Methods] Face-to-face questionnaire interviews were conducted,and descriptive statistics and chi-squared test were utilized for statistical analysis.[Results] A total of 151 MSM were interviewed and 128 social networks were identified.The network size varied from 2 to 6,and the proportion of network size above 4 was 32.93%.The network density varied from 0.4 to 1.00,and the median was 1.00.Among the 297 networks＇ members,85.86% were male,73.73% were aged ≤30 years,and 49.93% were college graduates or above.There was no significant difference in age and educational degree between the participants and the network members.As to the relationship with network members,61.62% were friends or classmates,15.15% were workmates,12.12% were sexual partners,11.11% were relatives,56.23% were MSM,and 24.58% had sex with network members,among whom 76.71% had sexual behaviors in the past 6 months.The age at first sex with men varied from 13 to 40 years old（mean±SD,22.73±5.14）.In the past 6 months,the number of male sexual partners varied from 1 to 101,with the median of 2,and 60.93% of the interviewees had more than 2 male sexual partners.The percentages of unprotected sexual behaviors with fixed,frequent,occasional,and commercial male partners and female partners were 51.65%,46.05%,36.84%,75.00%,and 53.33% respectively.[Conclusion] Multiple sexual partners and unprotected sexual behaviors are common among MSM.Social networks play an important role in dissemination of HIV risk behaviors and should be considered to develop targeted HIV intervention programs.