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[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 understand the social network and sexual behaviors of men who have sex with men (MSM), and provide reference for the intervention of MSM. [Methods] The questionnaire with uniform design was used to conduct the face-to-face survey and analyzed by descriptive and chi-square test. [Results] The 151 respondents had 128 social networks; the size of the network was 2 ~ 6 nodes, of which ≥4 nodes accounted for 32.93%; the network density was 0.40 ~ 1.00 and the median was 1.00; among the social network members 85.86% were males, 73.73% were ≤30 years old, 49.93% were college students or above, and there was no significant difference in the composition of the respondents and social objects’ age and education level. Of the 297 social objects, 61.62% were friends or fellow students, 15.15% were co-workers, 12.12% were sex partners, 11.11% were relatives, 56.23% were MSM, 24.58% had sexual intercourse with the respondents, 76.71% Have sex in the past 6 months. The first sexual intercourse with men was 13 to 40 years (average 22.73 ± 5.14 years). In the past 6 months, the number of male partners was 1 to 101 with a median of 2 and 60.93 % The incidence of unsafe sex with more than two male partners, fixed male partners, multiple male partners, occasional male partners, commercial male partners, and heterosexual partners were 51.65%, 46.05%, 36.84%, 75.00% and 53.33 %. [Conclusion] The MSM population is characterized by multiple sexual partners and unprotected sexual behaviors. Social networks are important influencing factors for the spread of AIDS risk behaviors. AIDS prevention and treatment should be carried out according to the characteristics of social networking in different regions.