title: [Prevalence of HIV infection and sexual behaviors with both men and women among currently married men who have sex with men].
abstract: OBJECTIVE
  To find out the status of HIV infection, sexual behaviors with both men and women as well as condom use among currently married men who have sex with men (MSM) so as to document for HIV intervention targeting this sub-population, in Beijing, Chengdu, Harbin and Zhengzhou cities.
  
  
  METHODS
  "Snowballing" sampling method was used to recruit subjects in four cities. Participants were investigated by anonymous questionnaire containing demographics, sexual orientation, both homosexual and heterosexual behaviors and condom use during the past 6 months. Blood samples from participants were used to test HIV antibodies.
  
  
  RESULTS
  Of the 858 participants for four cities, the average age was 38.3 (SD=9.1) years. 36.7% of them had completed the junior high school or under. The percentage of participants who identified themselves as homosexual, bisexual, and heterosexual or undecided were 40.9%, 54.3% and 4.8%, respectively. The overall HIV prevalence was 8.0%, and among four cities the HIV prevalence in Chengdu was the highest (13.3%). Results from the Multiple logistic regression analysis showed that never used condoms when having anal sex with men during the past 6 months among participants who did not have a city residential card, identifying himself as having homosexual orientation, living in Harbin, having first anal sex experience before 18 years of age the range of OR value was 1.5-2.1. In addition, the factors associated with never using condoms in vaginal sex with women during the past 6 months were as follows: being over 46 years old, not having a city residential card, living in Beijing, identifying himself as heterosexual orientated or with unknown sexual orientation, never using condoms in anal sex with men during the past 6 months, the range of OR value was 1.7-5.9.
  
  
  CONCLUSIONS
  The prevalence of HIV infection seemed to be quite high among those currently married MSM. High rates of unprotected homosexual and heterosexual behaviors might accelerate the spreading of HIV from currently married MSM to their wives.
authors.affiliation: Department of Epidemiology and Health Statistics, School of Public Health, Anhui Medical University, Hefei 230032, China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Cao
authors.forename: Hong-bo
authors.initials: HB
authors.lastname: Zhang
authors.forename: Min
authors.initials: M
authors.lastname: She
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.forename: Juan
authors.initials: J
authors.lastname: Xu
authors.forename: Yu-wen
authors.initials: YW
authors.lastname: Duan
authors.forename: Dan-dan
authors.initials: DD
authors.lastname: Song
authors.forename: Min
authors.initials: M
authors.lastname: Wang
authors.forename: Zhen-xin
authors.initials: ZX
authors.lastname: Dong
mesh_terms: D000328:Adult; D001727:Bisexuality / Q000706:statistics & numerical data*; D002681:China / Q000453:epidemiology; D017280:Condoms / Q000706:statistics & numerical data; D015658:HIV Infections / Q000453:epidemiology*; D018451:Homosexuality, Male / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D017533:Marital Status; D008875:Middle Aged; D012307:Risk Factors; D055815:Young Adult