title: [Behavioral characteristics of men who have sex with men with sadomasochism associated with bleeding].
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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of Dermatology, the Affiliated Hospital of Medical College, Qingdao University, Qingdao 266003, China. kacacpc@163.com
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Bei-chuan
authors.initials: BC
authors.lastname: Zhang
authors.forename: Xiu-fang
authors.initials: XF
authors.lastname: Li
authors.forename: Yun-shu
authors.initials: YS
authors.lastname: Zang
authors.forename: Li-xin
authors.initials: LX
authors.lastname: Wang
authors.forename: Guan-zhi
authors.initials: GZ
authors.lastname: Chen
authors.forename: Zeng-zhao
authors.initials: ZZ
authors.lastname: Yu
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology; D000328:Adult; D003430:Cross-Sectional Studies; D015658:HIV Infections / Q000453:epidemiology; D006470:Hemorrhage; D018451:Homosexuality, Male / Q000523:psychology*; D006801:Humans; D008297:Male; D008398:Masochism; D012448:Sadism; D012747:Sexual Partners; D011795:Surveys and Questionnaires; D047568:Unsafe Sex