南京市男男性行为者新型毒品使用情况及相关因素

  目的  了解南京市男男性行为者（men who have sex with men，MSM）新型毒品的使用情况及其相关因素。  方法  采用滚雪球、同伴推荐和互联网招募等方式招募MSM参加调查。采用多因素Logistic回归分析模型分析新型毒品使用的相关因素。  结果  876名MSM中，29.6%自述使用过新型毒品，人类免疫缺陷病毒（human immunodeficiency virus，HIV）和梅毒的感染率分别为9.5%和9.0%。控制了相关社会人口学因素的影响后，新型毒品使用者近6个月与同性发生无保护肛交（OR=1.83，95% CI:1.35~2.47，P < 0.001）、近6个月多性伴（OR=2.25，95% CI:1.65~3.05，P < 0.001）、HIV感染（OR=1.95，95% CI:1.21~3.17，P=0.007）和梅毒感染（OR=1.71，95% CI:1.02~2.84，P=0.040）的可能性较高。多因素分析结果显示，年龄<30岁（OR=1.50，95% CI:1.07~2.11，P=0.020）、性取向自我认定为同性恋（OR=1.65，95% CI:1.16~2.34，P=0.005）、互联网交友（OR=1.58，95% CI:1.07~2.35，P=0.022）、月收入≥ 5000元（OR=1.57，95% CI:1.13~2.17，P=0.007）、性角色自我认定为"被插入方"（OR=1.55，95% CI:1.04~2.32，P=0.033）的MSM使用新型毒品的可能性较高。  结论  南京市MSM新型毒品使用比例较高，新型毒品使用和HIV感染、梅毒感染及高危性行为有关联，新型毒品使用的危害性和警示性教育应成为MSM社区参与宣传教育关注的重点。

Status and associated factors of recreational drug use among man who have sex with man in Nanjing

  Objective  To understand the prevalence of synthetic drug use among man who have sex with man (MSM) in Nanjing and the associated factors.  Methods  MSM were recruited by snow-ball sampling, peer recommendation and network recruitment. Multivariate logistic regression analysis was performed to evaluate the correlated factors of recreational drug use.  Results  29.6% of the 876 MSM ever used recreational drugs. The prevalence of HIV and syphilis infections were 9.5% and 9.0% respectively. After controlling the influence of correlated factors, recreational drug use was correlated with unprotected anal intercourse in the past 6 months(OR=1.83, 95% CI: 1.35-2.47, P < 0.001), multiple male sex partnership in the past 6 months(OR=2.25, 95% CI: 1.65-3.05, P < 0.001), higher HIV prevalence (OR=1.95, 95% CI: 1.21-3.17, P=0.007) and higher syphilis prevalence(OR=1.71, 95% CI: 1.02-2.84, P=0.040). Multivariate Logistic analysis showed that demographic and behavioral factors associated with recreational drug use including: less than 30 years old (OR=1.50, 95% CI: 1.07-2.11, P=0.020), self-identified as homosexual orientation (OR=1.65, 95% CI: 1.16-2.34, P=0.005), seeking male partners mainly via the internet(OR=1.58, 95% CI: 1.07-2.35, P=0.022), higher monthly income(OR=1.57, 95% CI: 1.13-2.17, P=0.007), receptive sexual role(OR=1.55, 95% CI: 1.04-2.32, P=0.033).  Conclusions  MSM has a high prevalence of recreational drug use in Nanjing, which was positively correlated with HIV/syphilis infection and high risk behaviors. Intervention efforts should be devoted to reduce and combat drug use among MSM.