Sandahl B
Department of Obstetrics and Gynecology, University of Lund, General Hospital, Malmö, Sweden.
Eur J Obstet Gynecol Reprod Biol. 1989 Apr;31(1):23-31. doi: 10.1016/0028-2243(89)90023-3.
Smoking habits have been compared in three samples of pregnancies: (1) spontaneous abortions (n = 610); (2) induced abortions (n = 800); and (3) deliveries (n = 1337). The variables studied were, besides smoking habits, day of LMP, outcome of earlier pregnancies, maternal age, and, for the delivery sample, also diagnoses of mother and child, gestational length, sex, and birthweight. A statistical analysis of the association between smoking and the risk of having a spontaneous abortion was made. The comparisons were made with all types of intra-uterine pregnancies but spontaneous abortions, e.g., deliveries and induced abortions. The effects and consequences of that are discussed. The smoking rates according to pregnancy outcome differ among the samples. In the induced abortion sample 58% smoked compared with 50% in the spontaneous abortion sample and 44% in the delivery sample. The well-known effect of smoking on gestational length and birthweight was shown. No significant effect of smoking on the miscarriage risk was seen. The only trend was the opposite. Possible explanations for this are discussed.
（1）自然流产（n = 610）；（2）人工流产（n = 800）；以及（3）分娩（n = 1337）。除吸烟习惯外，研究的变量还包括末次月经日期、早期妊娠结局、产妇年龄，对于分娩样本，还包括母婴诊断、孕周、性别和出生体重。对吸烟与自然流产风险之间的关联进行了统计分析。对照所有类型的宫内妊娠（但不包括自然流产）进行比较，例如分娩和人工流产。并对其影响和后果进行了讨论。不同样本中，根据妊娠结局得出的吸烟率有所不同。人工流产样本中58%的人吸烟，自然流产样本中这一比例为50%，分娩样本中为44%。研究显示了吸烟对孕周和出生体重的众所周知的影响。未发现吸烟对流产风险有显著影响。唯一的趋势则相反。对此的可能解释也进行了讨论。
