title: Prevalence of unprotected anal intercourse among men who have sex with men in China: an updated meta-analysis.
abstract: OBJECTIVE
  The purpose of this review was to assess the prevalence of unprotected anal intercourse (UAI) among men who have sex with men (MSM) in China.
  
  
  METHODS
  A comprehensive search was conducted including online databases like "Wanfang", Chinese National Knowledge Infrastructure, PubMed and manual searches. Analyses using random-effects models were performed to estimate the prevalence of UAI among MSM in China.
  
  
  RESULTS
  Sixty-two articles reporting eighty-two studies were selected. The pooled prevalence rates of UAI with any male partner, with regular male partners, with non-regular male partners, with casual male partners, and with commercial male partners among MSM were 53%(95%CI: 51-56%), 45%(95%CI: 39-51%), 34%(95%CI: 24-45%), 33%(95%CI: 30-36%), 12% (95%CI: 5-26%), respectively. A cumulative meta-analysis found that the pooled UAI prevalence decreased over time.
  
  
  CONCLUSIONS
  Although the prevalence of UAI with male partners among MSM in China presents a decreasing trend over the past decade, the concomitant rise in HIV prevalence and incidence indicates that current prevention intervention efforts are insufficient to effectively contain the spread of HIV. Therefore, the persistently high prevalence of risky sexual behaviors underscores the need for innovative and effective prevention strategies among MSM.
authors.affiliation: National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wu
authors.affiliation: National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Department of Preventive Medicine, School of Medicine, Vanderbilt University, Nashville, Tennessee, United States of America.
authors.forename: Yujiang
authors.initials: Y
authors.lastname: Jia
authors.affiliation: National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing, China.
authors.forename: Yingying
authors.initials: Y
authors.lastname: Su
authors.affiliation: College of Nursing, Liaoning Medical University, Jinzhou, Liaoning, China.
authors.forename: Huixia
authors.initials: H
authors.lastname: Cui
authors.affiliation: National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing, China.
authors.forename: Huixin
authors.initials: H
authors.lastname: Liu
authors.affiliation: National Center for AIDS/STD Control and Prevention, China Center for Disease Control and Prevention, Beijing, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
mesh_terms: D002681:China / Q000453:epidemiology; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D011159:Population Surveillance; D015995:Prevalence; D012747:Sexual Partners; D047568:Unsafe Sex