Brazil / Pregnancy / Humans / Smoking / Female / Male / Infant / Risk factors / Newborn Infant / Prevalence / Maternal Age / Public health systems and services research / Odds ratio / Risk Factors / Cross Sectional Studies / Prenatal Care / Socioeconomic Factors / Male / Infant / Risk factors / Newborn Infant / Prevalence / Maternal Age / Public health systems and services research / Odds ratio / Risk Factors / Cross Sectional Studies / Prenatal Care / Socioeconomic Factors