title: A comparison of HIV infection and related risk factors between money boys and noncommercial men who have sex with men in Shenzhen, China.
abstract: BACKGROUND
  HIV transmission among men who have sex with men (MSM) has become an increasing concern in China. Money boys (MBs) are a subgroup of MSM who sell sex to men. Direct comparison of HIV prevalence and related risk factors between MB and noncommercial MSM (ncMSM) has rarely been done. This study was conducted to make the comparison.
  
  
  METHODS
  Eight hundred fifty MBs and 801 ncMSM were parallel recruited in Shenzhen by time-location sampling. Their behavioral and serologic data on HIV and syphilis were collected and compared. Multiple logistic regression analysis was performed to evaluate the determinants for HIV risk in MBs and ncMSM, respectively.
  
  
  RESULTS
  The prevalence of HIV was 4.5% in MBs and 7.0% in ncMSM. Although MBs tended to have more male partners than ncMSM, they were more likely to report a consistent condom use in male anal intercourse, especially in commercial sex. Noncommercial MSM were more likely to visit parks and saunas instead of bars, massage centers, recreational centers, and home-based venues. Syphilis infection and recruitment venue were associated with HIV infection in both MBs and ncMSM. Being from a hometown with a high HIV prevalence and without a male partner from Hong Kong were found to be risk factors for HIV infection in MBs, and early sexual debut was a risk factor in ncMSM.
  
  
  CONCLUSIONS
  Money boys differed from ncMSM in the rate of HIV infection and some sexual characteristics and behaviors. Formatting separate interventions specifically targeting the 2 subgroups may be necessary.
authors.affiliation: Shenzhen Center for Disease Control and Prevention, Shenzhen, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhao
authors.forename: Wen-De
authors.initials: WD
authors.lastname: Cai
authors.forename: Yong-Xia
authors.initials: YX
authors.lastname: Gan
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Zheng-Rong
authors.initials: ZR
authors.lastname: Yang
authors.forename: Jin-Quan
authors.initials: JQ
authors.lastname: Cheng
authors.forename: Si-Hao
authors.initials: SH
authors.lastname: Lin
authors.forename: Ming-Liang
authors.initials: ML
authors.lastname: He
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.forename: Xiao-Rong
authors.initials: XR
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D002681:China / Q000453:epidemiology; D017280:Condoms / Q000706:statistics & numerical data; D015658:HIV Infections / Q000453:epidemiology* / Q000517:prevention & control; D007722:Health Knowledge, Attitudes, Practice; D018451:Homosexuality, Male; D006801:Humans; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D015995:Prevalence; D012307:Risk Factors; D011477:Sex Work / Q000706:statistics & numerical data*; D012725:Sexual Behavior / Q000706:statistics & numerical data*; D012747:Sexual Partners; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D013587:Syphilis / Q000453:epidemiology* / Q000517:prevention & control