Nacional de Câncer. Rio de Janeiro, RJ,

Prevalence and risk factors associated with smoking among school children, Southern Brazil OBJECTIVE: To estimate the prevalence of smoking among students and associated factors. METHODS: Secondary data from the Vigescola Survey, conducted in the cities of Curitiba, Florianópolis and Porto Alegre (Southern Brazil) between 2002 and 2004, were used. Sample comprised 3,690 school children, aged between 13 and 15 years, and enrolled in the 7th and 8th grades of primary school and 1st grade of high school, in public and private schools. Weighted proportions and odds ratio (OR) were estimated and multiple logistic regression was used to analyze results