Bullying and associated factors in adolescents aged 11 to 15 years.

Bullying among adolescents has become the subject of extensive research due to its negative effects on attitude and behavior. However, Brazilian literature on the topic is scarce.To assess bullying and associated factors among adolescents in a population-based sample in southern Brazil.Population-based, cross-sectional study with adolescents aged 11 to 15 years living in the municipality of Pelotas, state of Rio Grande do Sul, Brazil.A total of 1,145 adolescents were included. Bullying behaviors and attitudes were found to be associated with the following factors: intentionally skipping classes, failing at school, using alcohol, smoking cigarettes, using illegal drugs, having engaged in sexual intercourse, carrying a weapon, being involved in an accident/being run over by any vehicle, and being involved in fights with physical aggression.Bullying is associated with several behaviors that pose risk to the adolescents' physical and psychological health.