The practice of bullying among Brazilian schoolchildren and associated factors, National School Health Survey 2015.

This study explored associations between bullying and sociodemographic, mental health and risk behavior variables in school age children. This cross-sectional survey analyzed data from the National School Health Survey (PeNSE 2015). A multiple logistic regression analysis checked for factors associated with bullying. Nineteen point eight percent (95%CI 10.5 - 20.0) of the students claimed they practiced bullying. The practice of bullying was more common among students enrolled in private schools, those living with their parents, and those whose mothers have more years of schooling and are gainfully employed (28.1% CI 27.3-28.8). In terms of mental health characteristics, bullying was more common among those feeling alone, suffering from insomnia and with no friends. Looking at family characteristics, those reporting they are physically punished by family members (33.09% CI 33.1-34.6) and miss school without telling their family (28.4% 95% CI 27.9-29.0) are more likely to practice bullying. Bullying was more frequent among those reporting tobacco, alcohol and drug use, and among students claiming to have had sexual relations. The data shows that bullying is significant and interferes in school children's health and the teaching-learning process. This must be addressed looking at youth as protagonists and in an inter-sectoral context.