【摘要】 目的　探讨纺织厂工效学因素对临床受孕时间的影响。方法　对某纺织厂的新婚妇女进行前瞻性队列研究 ,对这些妇女工作岗位的工效学因素进行单因素和多因素 COX比例风险回归分析及 L IFETEST(生存时间分析 )。结果　每个月经周期的临床受孕率为 2 7.2 %,平均临床受孕时间为 (3.6± 0 .13)个月经周期 ,受孕率随受孕时间的延长而逐渐降低。对单个工效学因素和多个工效学因素的作用进行单因素和多因素 COX比例风险回归分析。单因素 COX分析结果显示工作强度和工作紧张均与受孕率有明显的剂量反应关系 ;多因素分析显示只有工作强度与受孕力有关 ,且中度工作强度组受孕力为轻度组的 0 .72倍 ,重度工作强度组受孕力为轻度组的 0 .6 1倍。结论　工作强度可能是影响妇女临床受孕时间的一个重要的工效学因素。更多还原

【Abstract】 Objective To explore the influence of ergonomic factors on the time to pregnancy of women. Methods A prospective cohort of planning pregnancy textile women was followed, the ergonomic factors were analyzed by the single and multi-factors COX regression and lifetest analysis. Results The per cycle probability of pregnancy was 27.2%, mean cycle was 3.6±0.13. With the increasing time to pregnancy, the rate of clinical pregnancy decreased. The single and multivariate COX proportional hazard regression model were used to examine the association of ergonomic factors and time to pregnancy of women. There was a dose-response relation between physical exertion and fertility. The fertility ratio of middle physical exertion to light was 0.72, high to light was 0.61. Conclusions Physical exertion might be a very important ergonomic factors influencing time to pregnancy of women.更多还原