[Tobacco use in Brazilian school adolescents: association with mental health and family context].

Objective: To study the association between aspects of mental health and the family context with tobacco experimentation and consumption among Brazilian schoolchildren.

Method: A cross-sectional study using data from the National Survey of Schoolchildren's Health in Brazil conducted on 109,104 schoolchildren from the ninth year of elementary school, day scholars in public and private schools in all Brazilian state capitals and the Federal District. Descriptive analysis of variables, bivariate and multivariate analyses were performed with logistic regression estimates, adjusted for socioeconomic variables, obtaining the odds ratio (OR) and 95% confidence interval (95%CI).