title: Clustering of syringe sharing and unprotected sex risk behaviors in male injecting drug users in China.
abstract: OBJECTIVE
  To investigate, among male injecting drug users (IDU), the relationships between higher risk IDU-related and sex-related behaviors.
  
  
  OBJECTIVE
  To highlight the clustering effects of the 2 forms of risk behaviors.
  
  
  METHODS
  Behavioral surveillance surveys conducted in Sichuan were analyzed (n = 3105).
  
  
  RESULTS
  Of all respondents, 35.7% had injected with others' used syringes in the last 6 months, which was associated with female sex workers (FSW) and nonregular sex partners (NRP) partnership (OR = 1.81 and 1.59 respectively), and having had unprotected sex with FSW, NRP, and regular sex partners (OR = 1.96, 1.57, and 1.38 respectively). Higher drug use frequency was associated with having unprotected sex with FSW (among client of FSW, OR = 1.7) and with NRP (among those with NRP, OR = 1.61). Giving used syringes to others for injection was also associated with unprotected sex with NRP (OR = 1.97).
  
  
  CONCLUSIONS
  Interventions are urgently required to reduce both IDU-related and sex-related risk behaviors among male IDU.
authors.affiliation: Centre for Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong. jlau@cuhk.edu.hk
authors.forename: Joseph T F
authors.initials: JT
authors.lastname: Lau
authors.forename: Feng
authors.initials: F
authors.lastname: Cheng
authors.forename: Hi-Yi
authors.initials: HY
authors.lastname: Tsui
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhang
authors.forename: Jianxin
authors.initials: J
authors.lastname: Zhang
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.forename: Linglin
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D002681:China / Q000453:epidemiology; D016000:Cluster Analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016485:Needle Sharing; D012309:Risk-Taking; D012749:Sexually Transmitted Diseases / Q000453:epidemiology* / Q000209:etiology / Q000517:prevention & control*; D015819:Substance Abuse, Intravenous