Teitelman A M, Welch L S, Hellenbrand K G, Bracken M B
School of Nursing, Yale University, New Haven, CT.
Am J Epidemiol. 1990 Jan;131(1):104-13. doi: 10.1093/oxfordjournals.aje.a115463.
The association of the prolonged standing required by certain jobs with the rate of preterm births and low birth weight deliveries was examined in New Haven, Connecticut, between 1980 and 1982. In a sample of 1,206 women, the rate of preterm births (births occurring less than 37 weeks from the last menstrual period) was higher among women with jobs requiring prolonged standing (7.7%) compared with those with sedentary (4.2%) or active jobs (2.8%). The odds of preterm delivery in the standing group was 2.72 (95% confidence interval of 1.24-5.95). A significant association between standing on the job and preterm birth was demonstrated when adjustment was made for the following variables in a logistic regression model: parity, smoking, education, caffeine use, marijuana use, race, gestational age at interview, and marital status. The low birth weight (less than 2,500 g) rate was higher among those in the standing group (5.5%) compared with those in the sedentary (4.0%) and active groups (4.0%), but this association was not significant when confounding factors were controlled.
1980年至1982年间，在康涅狄格州纽黑文市，研究了某些工作所要求的长时间站立与早产率及低体重儿出生率之间的关联。在1206名女性样本中，需要长时间站立工作的女性早产率（自末次月经起少于37周分娩）高于从事久坐工作（4.2%）或活动量较大工作（2.8%）的女性。站立组早产的几率为2.72（95%置信区间为1.24 - 5.95）。在逻辑回归模型中对以下变量进行调整后，证明了工作时站立与早产之间存在显著关联：产次、吸烟情况、教育程度、咖啡因摄入、大麻使用、种族、访谈时的孕周以及婚姻状况。站立组低体重儿（低于2500克）出生率（5.5%）高于久坐组（4.0%）和活动量较大组（4.0%），但在控制混杂因素后，这种关联并不显著。
