Objectives: To evaluate the association between cigarette smoking and depression in pregnant women and to identify associated factors. Method: This was a cross-sectional study including 1,264 pregnant women assisted by the public health service in the municipality of Pelotas, Brazil. Depression was evaluated using the Edinburgh Postnatal Depression Scale. Cigarette consumption was assessed using open questions.Poisson regression was used to analyze the data. Results: The prevalence of depression during pregnancy was 21.2%; 19.3% of the depressed women were smokers. Women who smoked during pregnancy showed a 1.72-fold (95% confi dence interval: 1.27-2.34) higher probability of being depressed. Conclusion: Our fi ndings suggest a positive relationship between cigarette smoking and depression symptoms in pregnant women. Keywords: Depression, pregnancy, smoking, cross-sectional studies. ResumoObjetivos: Avaliar a associação entre consumo de cigarros e depressão durante a gravidez e identifi car fatores associados. Método: Trata-se de estudo transversal, que incluiu uma população de 1.264 gestantes atendidas nos serviços de maior fl uxo do Sistema Único de Saúde (SUS) da cidade de Pelotas (RS), Brasil. A depressão foi avaliada utilizando a Edinburgh Postnatal Depression Scale, e o consumo de tabaco foi verifi cado através de questões abertas. Na análise estatística, utilizou-se a regressão de Poisson. Resultados: A prevalência de depressão durante a gestação foi de 21,2%; 19,3% das gestantes com depressão eram fumantes. As mulheres que fumaram durante a gravidez apresentaram 1,72 (intervalo de confi ança de 95%: 1,27-2,34) maior probabilidade de ter depressão. Conclusão: Os resultados indicam uma relação positiva entre o consumo de cigarros durante a gravidez e episódios depressivos.
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