RESUMO
This study examined the sociodemographic predictors of smoking cessation attempts among pregnant women, and compared the characteristics of women who successfully quit smoking during pregnancy with those who relapsed before their child was born. Data, which were derived from the National Longitudinal Survey of Children and Youth, indicate that 23.7% of Canadian mothers smoked at some point during their pregnancies, of whom only 15.8% attempted to quit. Maternal and paternal education were the strongest predictors of successful cessation, whereas women pregnant with their first child, those who drank during pregnancy, and those who immigrated to Canada were the most likely to relapse. This study represents an important first step in identifying Canadian women at highest risk of sustained smoking during pregnancy, and is useful for the design of effective interventions, tailored to meet their needs.