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近十年来,吸烟对妊娠的影响颇受注意。对未选择的住院孕妇的大宗研究及少数仔细对照研究,均发现吸烟与不吸烟孕妇的婴儿出生体重有显著差异。作者1970年报告100名孕妇,其中50名不吸烟,50名吸烟,
In the past decade, the impact of smoking on pregnancy has drawn considerable attention. Large studies of unselected hospitalized pregnant women and a few carefully controlled studies have found significant differences in the birth weights of pregnant and non-smoking babies. The author reported 100 pregnant women in 1970, 50 of whom were non-smokers, 50 smokers,