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本文采用前瞻性流行病学研究方法对石油化工生产作业女工受孕时间进行了追踪观察。结果表明，１７４次妊娠在停止避孕后第一个月经周期受孕率为３２．３％，３个月累积受孕率为７７．６％，６个月累积受孕率为８７．９％，一年累积受孕率为９７．１％；该行业非接触组女工第一个月受孕率为３５．６％，接触组为２６．５％，提示石油化工生产作业可能对女工第一个月受孕时间有一定影响。
In this paper, a prospective epidemiological study was conducted to observe the pregnancy time of female workers in petrochemical production operations. The results showed that the pregnancy rate of 174 pregnancies in the first menstrual cycle after stopping contraception was 32.3%, the cumulative pregnancy rate in 3 months was 77.6%, and the cumulative pregnancy rate in 6 months was 87.9% Pregnancy rate was 97.1%; the non-contact group of female workers in the industry the first month conception rate was 35.6%, contact group was 26.5%, suggesting that the petrochemical production operations may be the first month of female workers have a certain conception time influences.