OBJECTIVE:

to analyze the simultaneity of two groups of risk behaviors for sexually transmitted infections in Brazilian adolescents.

METHODS:

cross-sectional study with data from the National Adolescent School-based Health Survey 2012; the outcomes were (1) simultaneous consumption of alcohol, tobacco and drugs (at least two), and (2) no use of condom and having two or more sexual partners.

RESULTS:

simultaneity of consumption of alcohol, tobacco and drugs was present in 14.7% of the boys and 21.5% of the girls, and was more prevalent among white individuals, with more educated mothers, and who did not live with their parents; approximately 12.0% of the adolescents presented simultaneity of no use of condom and having two or more sexual partners; this was more common among younger boys, not white (PR=1.22; 95%CI 1.10;1.36), and who did not live with their parents (PR=1.78; 95%CI 1.48;2.16), whilst among girls, this outcome was associated with higher age.

CONCLUSION:

both outcomes were associated with different characteristics, depending on the sex of the adolescent.

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