Homer C J, Beresford S A, James S A, Siegel E, Wilcox S
Department of Pediatrics, University of North Carolina, Chapel Hill.
Paediatr Perinat Epidemiol. 1990 Apr;4(2):161-74. doi: 10.1111/j.1365-3016.1990.tb00634.x.
Although many women work during pregnancy, the effect of maternal job experience on pregnancy outcome is controversial. We investigated whether work-related physical exertion increases a woman's risk of delivering a preterm, low birthweight infant. We studied 773 employed, pregnant women included in the National Longitudinal Survey of Labor Market Experience, Youth Cohort (NLSY), a nationally representative sample of young adults. Data concerning work status, job title during pregnancy, and other factors affecting the outcome of pregnancy were obtained from the NLSY. Assessment of physical exertion was based on job title, using an established catalogue of occupational characteristics. Women in jobs characterised by high physical exertion experienced a higher rate of preterm, low birthweight delivery, defined as maternal report of delivery more than 3 weeks early and birthweight under 2,500 g (adjusted RR = 5.1, 95% CI = 1.5, 17.7). These findings support a policy of limiting work-related physical exertion during pregnancy.
尽管许多女性在孕期仍继续工作，但母亲的工作经历对妊娠结局的影响仍存在争议。我们调查了与工作相关的体力活动是否会增加女性分娩早产、低体重婴儿的风险。我们研究了773名受雇的孕妇，她们均纳入了全国劳动力市场经验纵向调查青年队列（NLSY），这是一个具有全国代表性的年轻成年人样本。有关工作状态、孕期工作职位以及其他影响妊娠结局的因素的数据均来自NLSY。体力活动的评估基于工作职位，采用已确立的职业特征分类目录。从事高体力活动工作的女性早产、低体重分娩的发生率更高，早产、低体重分娩定义为母亲报告分娩提前超过3周且出生体重低于2500克（校正风险比=5.1，95%置信区间=1.5，17.7）。这些研究结果支持在孕期限制与工作相关的体力活动这一政策。
