对照组和研究组发生产科应激事件的孕妇中PPD的发生率分别15.71%和8.39%，差异具有统计学意义（P<0.05）；
Of the pregnant women with obstetric stress events, the PPD incidents in the control group and the experimental group were 15.71% and 8.39% respectively with significant differences (P<0.05).
对照组和研究组发生产科应激事件的孕妇中PPD的发生率分别15.71%和8.39%，差异具有统计学意义（P<0.05）；
Of the pregnant women with obstetric stress events, the PPD incidents in the control group and the experimental group were 15.71% and 8.39% respectively with significant differences (P<0.05).
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