Nordström M L, Cnattingius S
Department of Social Medicine, University Hospital, Uppsala, Sweden.
Scand J Soc Med. 1996 Mar;24(1):55-61. doi: 10.1177/140349489602400109.
Birthweights of 3,451 infants of women registered for antenatal care in Uppsala County, Sweden, were analyzed using three different maternal socio-economic indicators; education, socio-economic status and work environment exposure characteristics. Other explanatory variables were maternal age, parity, height, smoking habits, and length of gestation. Mean birthweights increase with longer education and higher socio-economic status. No general pattern was seen for work environment characteristics. When smoking habits are controlled for, social differences in birthweight decrease to non-significant values. A regression model with a socio-economic indicator alone explains only a minor part, less than 1%, of the variation in birthweight. When smoking is included, adding a socio-economic indicator does not significantly improve the model. Practically all social differences in birthweight are related to the differences in maternal age, parity, height, and smoking habits. If a socio-economic indicator is to be included in the analysis of birthweights (for other reasons like international comparisons), we recommend education.
对瑞典乌普萨拉郡3451名登记接受产前护理的孕妇所生婴儿的出生体重进行了分析，采用了三种不同的孕产妇社会经济指标：教育程度、社会经济地位和工作环境暴露特征。其他解释变量包括产妇年龄、产次、身高、吸烟习惯和妊娠期长度。平均出生体重随着教育程度的提高和社会经济地位的上升而增加。工作环境特征方面未发现总体模式。当控制吸烟习惯时，出生体重的社会差异降至不显著水平。仅使用一个社会经济指标的回归模型只能解释出生体重变化的一小部分，不到1%。当纳入吸烟因素时，添加一个社会经济指标并不能显著改善模型。实际上，出生体重的所有社会差异都与产妇年龄、产次、身高和吸烟习惯的差异有关。如果要在出生体重分析中纳入社会经济指标（出于国际比较等其他原因），我们建议采用教育程度指标。
