产后出血危险因素病例对照研究

为了研究影响产后出血的危险因素，于１９９１年１０月至１９９２年１月在湖北省随州市进行了一次１：２配比的病例对照研究，以经阴道分娩，出血量达到或超过５００ｍｌ者作为“病例”，以出血量低于２００ｍｌ者作为“对照”。研究对象包括１０９例“病例”和２１８例“对照”，全部在市级医院分娩。利用ＳＡＳ软件采用单因素分析、多元逐步回归分析和多元条件Ｌｏｇｉｓｔｉｃ回归分析估计各危险因素的大小。结果表明：第三产程延长、人均收入低、未进行产前检查、孕期情绪差、劳动强度大、流产史等是影响产后出血的重要因素。

Epidemiologic Study on the Risk Factors of Postpartum Hemorrhage

The 1:2 matched case-control retrospective study of postpartum hemorrhage (PPH) was undertaken in Suizhou, Hubei Province from 1 January 1990 to 31 December 1991. The subjects consisted of 109 women who had a PPH (blood loss equal to or more than 500ml) and 218 women whose blood loss at delivery was less than 200 ml. The results showed that multiparity, age younger than 20 or older than 36, long second and third stages of labour, abortion, low income, lack of obstetric care, etc, were identified as risk factors statistically.