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７省２０个妇幼项目县对孕产妇死亡危险因素的１：１病例对照研究结果表明：单因素配对分析发现其中与孕产妇死亡有显著性意义的因素为计划外妊娠（ＯＲ＝２．３）、生活在大家庭（ＯＲ＝１．４）、想生男孩（ＯＲ＝２．８）、无产前检查史（ＯＲ＝２．９）、非住院分娩（ＯＲ＝１．７）、产后大出血（ＯＲ＝２．５）、孕产妇有一定文化程度（ＯＲ＝０．７）和孕产妇本人有经济收入（ＯＲ＝０．４）等。多因素Ｌｏｇｉｓｔｉｃ回归分析发现与孕产妇死亡有关的危险因素有计划外妊娠、想生男孩、非住院分娩、产后大出血、未消毒接生、孕期合并症等。并且发现孕产妇有一定文化程度、孕产妇有独立经济收入、孕产妇有一定保健知识对减少孕产妇死亡有一定保护作用。
A 1: 1 case-control study on risk factors of maternal mortality among 20 maternity and child-rearing counties in 7 provinces showed that uniparental paired analysis showed that the factors that were significantly associated with maternal mortality were unplanned pregnancy (OR = 2.3) (OR = 1.4), wanted to have a boy (OR = 2.8), no history of prenatal examination (OR = 2.9), no hospital delivery (OR = 1.7), postpartum hemorrhage OR = 2.5), pregnant women have a certain degree of education (OR = 0.7) and pregnant women have their own economic income (OR = 0.4) and so on. Multivariate Logistic regression analysis found that the risk factors associated with maternal mortality were unplanned pregnancy, wanted to have a boy, non-hospital delivery, postpartum hemorrhage, non-sterile birth, complications during pregnancy and so on. And found that pregnant women have a certain degree of education, pregnant women have independent economic income, maternal health knowledge to reduce maternal mortality have some protective effect.