title: [Surveillance of HIV/AIDS-related behaviors among men who have sex with men--Switzerland, 1992-2004].
abstract: OBJECTIVE
  To update (1992-2004, Switzerland) trends in behaviors and opinions relative to HIV prevention among men who have sex with men.
  
  
  METHODS
  A cross sectional survey, repeated five times since 1992, among readers of the gay press and members of gay associations.
  
  
  RESULTS
  An increase was observed in the median number of partners (1994: 5; 2004: 7, p < 0.05), in the proportion of participants who practiced anal penetration with their stable partner (1992: 71%; 2004: 80%, p < 0.05) or with casual partners (1994: 59% 2004: 73%; p < 0.05). Non systematic use of condoms with casual partners during anal penetration increased between 1994 and 2004 (9% to 20%; p < 0.05). Combination therapies gave rise to growing pessimism among participants regarding the decrease in preventive behaviors among homosexuals.
  
  
  CONCLUSIONS
  The slow trend towards a reduction of safer sex practices continues among men who have sex with men. It is necessary to strengthen prevention interventions in this population.
authors.affiliation: Institut universitaire de Medecine Sociale et Préventive, Unité d'Evaluation de Programmes de Prévention, Lausanne, Suisse. Hugues.Balthasar@chuv.ch
authors.forename: H
authors.initials: H
authors.lastname: Balthasar
authors.forename: A
authors.initials: A
authors.lastname: Jeannin
authors.forename: F
authors.initials: F
authors.lastname: Dubois-Arber
mesh_terms: D015492:AIDS Serodiagnosis / Q000706:statistics & numerical data; D000163:Acquired Immunodeficiency Syndrome / Q000453:epidemiology / Q000517:prevention & control* / Q000523:psychology; D000328:Adult; D017280:Condoms / Q000706:statistics & numerical data; D015658:HIV Infections / Q000453:epidemiology / Q000517:prevention & control* / Q000523:psychology; D015438:Health Behavior; D007722:Health Knowledge, Attitudes, Practice; D018451:Homosexuality, Male / Q000523:psychology* / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data; D011159:Population Surveillance; D012747:Sexual Partners / Q000523:psychology; D012931:Social Environment; D013557:Switzerland; D047568:Unsafe Sex / Q000517:prevention & control / Q000523:psychology / Q000706:statistics & numerical data; D014600:Utilization Review / Q000706:statistics & numerical data