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Smoking in Dutch pregnant women and birth weight
Affiliation:2. Special Medicine Departments, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
Abstract:In this study 796 ambulatory singular pregnant women were questioned about their smoking habits both before and during pregnancy (ambispective). Important covariates such as parity, blood pressure, maternal weight gain, salt- and alcohol consumption and length of gestation were taken into account. At the beginning of pregnancy 52% of the questioned women smoked; 36% smoked in the seventh/eighth month of pregnancy. A dose-response relationship was found between the number of cigarettes smoked per day and birth weight. For those pregnant women who still smoked after 7 months of pregnancy an average birth weight loss of 24 g was found per cigarette per day. Even after controlling for covariates, there still remains an independent influence of smoking on birth weight loss on the average of 19 g for each cigarette smoked per day.
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