Use Of Psychoactive Substances And Contraceptive Methods By The Brazilian Urban Population, 2005 [uso De Substâncias Psicoativas E Métodos Contraceptivos Pela População Urbana Brasileira, 2005]

Objective: To analyze the relationship between utilization patterns for condoms and other contraceptive methods and the consumption of alcohol and drugs. Methods: Exploratory study based on data from a probabilistic sample of 5,040 interviewees aged 16 to 65 years living in large urban regions of Brazil in 2005. The data were collected by means of questionnaires. The chi-square automatic interaction classifi cation tree technique was used to study the use of condoms among interviewees of both sexes and other contraceptive methods among women, at the time of the last vaginal sexual intercourse. Results: Among young and middle-aged adults of both sexes and young men in stable relationships, condom use was less frequent among those who said they used psychoactive substances (alcohol and/or illegal drugs). The possible modulating effect of psychoactive substances on contraceptive practices among mature women seems to be more straightforward, compared to the more subtle effects observed among younger women, for whom the different social classes they belonged to seemed to play a more important role. 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