Becerra J E, Smith J C
Division of Reproductive Health, Centers for Disease Control, Atlanta, GA 30333.
Am J Public Health. 1988 Mar;78(3):268-72. doi: 10.2105/ajph.78.3.268.
In 1982, a representative sample of 3,175 women ages 15 to 49 years living in Puerto Rico were interviewed and complete reproductive histories obtained. Births to mothers who started smoking regularly at some time before delivery and who were still smoking at the time of the interview (the exposure definition) were compared with unexposed births. Our analysis of 4,444 single, live births delivered in public and private hospitals from 1946 through 1982 demonstrates that births to smoking women aged 20 and older delivering in public hospitals were 2.5 times more likely to weigh less than 2,500 grams (95% confidence interval (CI) = 1.9, 2.3), and on the average weighed 207 grams less (95% CI = 130, 284) than births to a comparable group of nonsmoking mothers. However, we found no other difference in birthweight between newborns of smoking and nonsmoking women when comparing their births within the same hospital category and age group. The data in this study suggest that the effect of smoking on birthweight among births to Puerto Rican women may be modified by maternal age and by whether the infant was born in a private or public hospital.
1982年，对居住在波多黎各的3175名年龄在15至49岁之间的女性进行了代表性抽样访谈，并获取了完整的生育史。将在分娩前某个时间开始经常吸烟且在访谈时仍在吸烟的母亲所生的婴儿（暴露定义）与未暴露的婴儿进行比较。我们对1946年至1982年在公立和私立医院分娩的4444例单胎活产进行的分析表明，在公立医院分娩的20岁及以上吸烟女性所生的婴儿体重低于2500克的可能性是对照组不吸烟母亲所生婴儿的2.5倍（95%置信区间（CI）=1.9,2.3），平均体重轻207克（95%CI=130,284）。然而，当在同一医院类别和年龄组内比较吸烟和不吸烟女性的新生儿时，我们发现出生体重没有其他差异。本研究中的数据表明，吸烟对波多黎各女性所生孩子出生体重的影响可能会因母亲年龄以及婴儿是在私立医院还是公立医院出生而有所改变。
