对男男性行为者中＂买＂性者艾滋病高危行为状况调查

Study on the AIDS-related high risk behaviors of men who have sex with men under the experience of exchanging money for the same sex

目的 探讨男男性行为者（MSM）中曾向同性＂买＂性的亚人群艾滋病高危行为状况.方法 采用定向抽样法进行横断面调查.对全国9城市1959名MSM的有效匿名问卷用SPSS 13.0统计软件包建立数据库并进行统计学分析,对相应资料进行t检验、x2检验及非参数Mann-Whimey Test检验.比较曾同性＂买＂性者与无此经历者艾滋病高危行为差异.结果 9城市1959名MSM中曾同性＂买＂性者相对年长,其特征为在婚、在大城市且收入高（P＜0.01）;其累计同性性伴数、累计同性肛交和口交性伴数（中位数）分别为50.0人、20.0人、20.0人;近6个月同性性伴数、同性肛交及口交性伴数（中位数）分别为5.0人、4.0人、5.0人,均高于无此经历者（P＜0.01）.曾向同性＂买＂性者近1年31.5%曾参加群交,OR值（95%口）为2.288（1.702～3.077）,48.0%曾去外地并与同性性交OR值（95%a）为3.231（2.462～4.241）,近6个月70.5%在MSM活动场所与陌生同性性交过,OR值（95%CI）为2.840（2.140～3.770）;以上百分比均高于无此经历者（P＜0.01）.曾向同性＂买＂性者45.7%与女性性交时使用安全套,OR值（95%CI）为0.685（0.476～0.986）,低于无此经历者（P＜0.05）.结论 MSM中曾向同性＂买＂性者有较多的艾滋病高危行为,应针对不同亚人群采取干预措施.

Objective To investigate the AIDS-related high risk behaviors of men who havesex with men （MSM） who ever exchanged money for the same sex. Methods Target sampling forcross-sectional study and valid anonymous questionnaires were adopted to compare the differences ofAIDS-related high risk behaviors between MSM with the experience of exchanging money for thesame sex and those without that experience. 1959 rstadied samples were recruited in nine cities. SPSS13.0 was used and t, x 2 and Mann-Whitney tests were taken for statistical analysis. ResultsCompared to corresponding ones without ＂buying＂ the same sex experience, MSM who ever engagedin ＂buying＂ sex had the characteristics of being prone to in marriage and living in larger cities witholder age and higher income （P〈0.01）. They also had a significant larger number in the followingevents： total sexual panners, anal sex and oral sex episodes with same sex, number of sexualpartners, anal sex and oral sex in the previous six months, with the figure of median 50.0, 20.0,20.0, 5.0,4.0,5.0 respectively. 31.5% had ever participated in ＇group sex＇, 48.0% had sex with malepartners away from his own region in the previous year, 70.5% had sexual intercourse withstrangers at MSM avenues in the last six months. The OR （95% CI） values were 2.288（ 1.702-3.077）, 3.231 （2.462-4.241 ）, 2.840 （2.140-3.770）. All the above mentioned figures werehigher than those without the experience, with significant differences. They had a significant lower rate of 45.7% of condom use while having sex with female partners （P〈0.05）. Conclusion MSM with the experience of exchanging money for the same sex would have more AIDS-related high risk behaviors, AIDS preventative measures should be taken to target different subgroups.