American journal of preventive medicine
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We report patterns of prenatal smoking cessation and postpartum relapse for a large urban population of pregnant women. We examined associations between sociodemographic factors and prepregnancy, pregnancy, and early postpartum smoking behavior. Forty-one percent of women smoking before pregnancy quit smoking during pregnancy. ⋯ Early postpartum smoking relapse rates differed by ethnicity. Twenty-eight percent of white women and 46% of black women who had quit during pregnancy relapsed within 6-12 weeks postpartum. Using logistic regression, we found formula feeding to be the most important predictor of early postpartum smoking relapse for both white and black women.