Abstract
Objective: To estimate the prevalence and sociodemographic factors associated with smoking and alcohol consumption in school adolescents living in a small Brazilian city. Methods: Cross-sectional study conducted in 583 schoolchildren aged 15 to 18 years of state public schools. Data were collected through the questionnaire “Estilo de Vida dos Adolescentes Manauara” (Lifestyle of Adolescents Manauara 2011). Results: Higher odds (OR: 4.26; 95%CI: 1.31-13.82) of being an ex-smoker were found in schoolchildren who lived in rural areas. In addition, being male (OR: 5.18; 95%CI: 1.39-19.28), being in the 17-18 age group (OR: 1.96; 95%CI: 1.16-3.30) and studying in the afternoon study shift (OR: 7.66; 95%CI: 1.62-36.24) was associated with greater odds of being a smoker. Adolescents aged 17 to 18 years were 113% more likely to consume alcohol excessively (OR: 0.37; 95%CI: 0.25-2.78). Conclusion: The estimated prevalence for smoking was lower compared to alcohol consumption. The subgroups of adolescents who were more likely to smoke and consume alcohol, were male students aged 18-19 years.