Objective:

To identify the association between knowledge about pregnancy risk and self-efficacy in condom use with parental support and school factors in adolescent men.

Materials and methods:

Cross-sectional study with 448 students in Puebla and Morelos. Two logistic models were adjusted.

Results:

Knowledge about pregnancy risk is associated with communication about sexuality between parents and sons (OR = 2.45, 95%CI 1.35-4.47), satisfaction with school (OR=2.18, 95%CI 1.15-4.13), if teachers talk about gender equity frequently/very frequently (OR=1.69, 95%CI 1.06-2.67) and with age (OR=1.77, 95%CI 1.26-2.50). Self-efficacy in condom use is statistical related with communication about sexuality between parents and sons (OR=1.80, 95%CI 1.01-3.20), satisfaction with school (OR=2.60, 95%CI 1.42-4.77), belong to middle socioeconomic level (OR=1.82, 95%CI 1.07-3.11) and live in a community with a high degree of marginalization (OR=0.47, 95%CI 0.30-0.73).

Conclusions:

To study family and school support, considering the influence of the social environment, allows a greater understanding of skills acquisition for a preventive sexual behavior, in males during early adolescence.

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