title: Association between cannabis use and sexual risk behavior among young heterosexual adults.
abstract: To study the association between cannabis use and frequent sexual risk behavior, we tested the hypothesis of a situational influence of cannabis use in sexual encounters using a combination of global association study and event-level analysis and examined possible mediator variables, including the personality trait of hedonism/risk preference, psychosocial stress, and HIV-related beliefs, using mediation models. The results of a computer-assisted telephone interview of a random sample of 2790 heterosexual men and women aged 16-24 years showed that risky sexual behavior was more frequent in cannabis-using men and women than in non-using persons. The results did not support a situational effect of cannabis intoxication on sexual risk behavior. The more frequent sexual risk behavior among cannabis users was mediated by decreased intentions to use HIV protection, by lower HIV-self-efficacy, and higher risk preference/hedonism. Only among women psychosocial stress was a partial mediator. The findings show that HIV prevention programs for cannabis-using young adults should emphasize the role of person variables instead of situation variables.
authors.affiliation: University Hospital for Clinical Psychiatry, Berne, Switzerland. brodbeck@puk.unibe.ch
authors.forename: Jeannette
authors.initials: J
authors.lastname: Brodbeck
authors.forename: Monika
authors.initials: M
authors.lastname: Matter
authors.forename: Franz
authors.initials: F
authors.lastname: Moggi
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D015658:HIV Infections / Q000517:prevention & control*; D020010:Heterosexuality; D006801:Humans; D007407:Interviews as Topic; D008297:Male; D002189:Marijuana Abuse; D012309:Risk-Taking; D012725:Sexual Behavior