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目的了解浙江省杭州市男男性接触人群(men who have sex with men,MSM)的社会人口学特征及梅毒感染情况,为针对性地开展该群体的健康教育及高危行为干预工作提供依据。方法对2009-2012年杭州市795名MSM人群进行问卷调查,收集社会人口学和危险行为资料,采集静脉血进行梅毒抗体检测。采用SPSS 12.0软件对结果进行单因素χ2检验,以P<0.05为差异有统计学意义。结果杭州市MSM人群以高学历、未婚青壮年为主。调查对象中,684人(86.04%)最近半年与男性发生过肛交性行为,54人(7.89%)从未使用安全套,425人(62.14%)有时使用,205人(29.97%)每次都用。最近半年与异性发生性行为者228人(28.68%),其中有47人(20.61%)每次都使用安全套。共检出梅毒感染者85例,感染率为10.69%,各年度感染率差异无统计学意义(χ2=1.554,P>0.05);不同文化程度、不同婚姻状况及不同安全套使用情况的MSM人群梅毒感染率差异有统计学意义(χ2值分别为12.232、12.630和10.150,P<0.01);按是否感染梅毒分组比较,HIV抗体阳性率差异有统计学意义(χ2=14.565,P<0.01)。结论杭州市MSM人群是梅毒感染的高危人群,存在较高无保护男男性行为现象,应加强对MSM人群及其感染者的健康教育和行为干预。
Objective To understand the socio-demographic characteristics and syphilis infection among men who have sex with men (MSM) in Hangzhou, Zhejiang province, and provide the basis for targeted health education and high-risk behavioral intervention in this population. Methods A questionnaire survey was conducted on 795 MSM population in Hangzhou from 2009 to 2012. Sociodemographic and risk behavior data were collected and venous blood was collected for the detection of syphilis antibody. SPSS 12.0 software was used to test the results by one-way χ2 test, P <0.05 was considered statistically significant. Results The MSM population in Hangzhou was mainly educated and unmarried young adults. Of the respondents, 684 (86.04%) had anal intercourse with men in the past six months, 54 (7.89%) never used condoms, 425 (62.14%) were occasionally used and 205 (29.97%) used each time . In the recent six months, there were 228 (28.68%) people with heterosexual sex. Of these, 47 (20.61%) used condoms every time. A total of 85 syphilis cases were detected, the infection rate was 10.69%. There was no significant difference in the annual infection rates (χ2 = 1.554, P> 0.05). Syphilis among MSM population with different educational level, marital status and condom use (Χ2 = 12.232, 12.630 and 10.150 respectively, P <0.01). The positive rate of HIV antibody was significantly different according to whether infected with syphilis group (χ2 = 14.565, P <0.01). Conclusion The MSM population in Hangzhou is a high risk population of syphilis infection. There is a high incidence of unprotected MSM. Health education and behavioral intervention should be strengthened in MSM population and those infected.