ABSTRACT
Objective To investigate the behavioral characteristics of men who have sex with men(MSM)with sadomasochism associated bleeding and to analyze the relationship with HIV/AIDS high risk behavior.Methods Using modified snowball sampling methods(target sampling methods)to carry out a cross-sectional study on persons with behavior of sadomasochism that associated with bleeding in MSM,using a valid questionnaire.Another control group without the related behavior was set up.SPSS 13.0 was used.Results People practicing sadomasochism associated with bleeding had higher percentage in the following indicators:number of accumulated same gender sexual partners (median=20),anal intercourse(median=10),oral intercourse(median=10),hand intercourse (median=15)with same gender sexual partners,number of same gender sexual partners in the previous six months(median=4),numbers of anal intercourse(median=3),hand intercourse(median=3),were more than in the control group.People with sadomasochism associated bleeding had higher rates in the following behaviors:condom was ever broken or slipped in the previous six months (22.6%),suffering from disease of sexual transmitted infections(28.0%),involving in group-sex intercourse(34.8%),having sex with same sex strangers at the place for MSM in the previous six months(62.2%),ever having initiative or passive behavior of oral-anal sex(64.0%),fist-sex(18.9%),finger-sex(66.7%),bleeding during sexual intercourse(58.3%),first coition object was pupil (33.8%),having strong suicide attempts(33.3%)and suicide attempt(23.6%)etc.were more than in the control group.Conclusion MSM who had the behavior of sadomasochism which associated with bleeding had the higher percentage of HIV/AIDS high risk behaviors than the persons without those behaviors.The latter group called for special concern on interventions.