在疾病的病因学研究中,把具有某因素的人群患病率(或死亡率)和不具有某因素的患病率(或死亡率)做对比,来说明这个因素致病的危险性.而对比的数值称为相对危险性. 例如:吸烟者患肺癌的比率是不吸烟者的8倍~12倍,从肺癌的年死亡率来看,吸烟者比不吸烟者高18.4倍,所以
采用对数的回归分析评价生育的相对危险性,可信区间为95%。
We used logistic regression analyses to estimate the relative risk of birth outcomes with 95% confidence intervals.
MCI转化为痴呆或AD的相对危险性分别为认知正常者的9倍和6倍。
The relative risks of MCI to dementia and AD were 9 and 6 times as compared with NC subjects.
由于败血症通过合适的绝对和相对危险性减小来表示使得死亡的危险性减小。
The reduction of the mortality risk due to sepsis is represented by the calculated absolute and relative risk reduction.
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