[Tobacco use in pregnancy: prevalence and factors associated with maintenance of consumption].

OBJETIVO: El consumo de tabaco durante el embarazo es perjudicial para las mujeres embarazadas y el feto. En Galicia la prevalencia del consumo durante el embarazo no esta actualizada y se desconocen las caracteristicas de las mujeres que continuan fumando durante el embarazo. Los objetivos de este trabajo fueron estimar, antes y durante el embarazo, la prevalencia del uso del tabaco, caracterizar su consumo e identificar factores asociados al mantenimiento durante el embarazo. METHODS: A cross-sectional study was conducted in 2016 targeting women who had given birth within the previous 12 months (n=6.436) in Galicia. Information was collected regarding the mother's status before and during pregnancy, at the time of delivery and survey. Smoking prevalence was estimated both globally and by women related characteristics. Regression models were performed to identify variables associated with smoking maintenance. Prevalence and odds ratio are presented accompanied with 95% confidence interval. RESULTADOS: La prevalencia del consumo de tabaco durante el embarazo fue del 11,9% (11,1-12,8). Entre las mujeres que mantuvieron el consumo durante el embarazo, el porcentaje de fumadoras de cigarrillos disminuyo, el de tabaco de liar permanecio estable. Seguir fumando durante el embarazo estuvo relacionado con la nacionalidad, el nivel educativo, o con el consumo previo. CONCLUSIONS: Despite the fact that more than half of Galician women stop smoking during pregnancy, smoking prevalence remains at 12%. The different demographic factors identified in this study as predictors of smoking maintenance, should be kept in mind when intervention programs focused on pregnant women will be design.