摘要
本文介绍了多类反应结果的logistic回归方法,并应用该方法对933名产妇产后出血调查资料进行了分析,以探讨人工流产史和妊娠高血压综合征(妊高征)与产后出血的关系。结果表明:胎盘因素性产后出血与人工流产史和妊高征有关,相对危险度分别为2.6(95％可信区间为1.2～5.3)和4.9(95％可信区间为1.8～3.2);宫缩乏力性产后出血与妊高征有关,相对危险度为2.6(95％可信区间为1.3～5.2),但未发现与人工流产史有关。本研究结果为防治产后出血提供了科学依据。
To determine the role ofhistory of induced abortion and pregnancyinduced hypertension in postpartum hem-orrhage, a polychotomous logistic regres-sion method was introduced to analyze thedata gathered in an investigation of bloodloss among 933 parturients in some coun-ties of Sichuan and Ningxia provinces. The results show that postpartum hemor-rhage caused by placenta factors is relatedto a history of induced abortion and preg-nancy induced hypertension with rela-tive risks 2.55 (95% confidence interval=1.2-5.3) and 4.94(95% confidence inter-val=1.8-13.2), respectively. An increas-ed risk was noted for postpartum hemor-rhage associated with pregnancy inducedhypertension(relative risk=2.58,95%confidence interval=1.3-5.2), but notwith induced abortion. Suggestions weremade for prevention of postpartum hem-orrhage.
出处
《华西医科大学学报》
CAS
CSCD
1991年第3期318-321,共4页
Journal of West China University of Medical Sciences
关键词
LOGISTIC回归
产后出血
影响因
Polychotomous
logistics regression
Risk factors
Postpartum hemorrhage
