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为探讨自然流产与吸烟、饮酒及饮咖啡之间的联系,作者取加拿大蒙特利尔市11所医院于1982～1984年收治的正常分娩和自然流产的妇女为研究对象。通过询问了解受试者的年龄、种族、文化程度、职业、妊娠史、分娩史或流产史、并详细了解妊娠首三月的吸烟、饮酒及饮咖啡状况,剔除既往有人工流产史及资料不完整者后,共选出47146名妇女作为研究分析对象。
To explore the relationship between spontaneous abortion and smoking, drinking and drinking coffee, the authors selected women who had normal delivery and spontaneous abortion admitted to 11 hospitals in Montreal, Canada from 1982 to 1984. Inquire about the subjects’ age, race, education level, occupation, pregnancy history, labor history or miscarriage history and learn more about smoking, drinking and drinking during the first trimester of pregnancy by querying the history of abortion and data After completing the survey, 47,146 women were selected as research objects.