The MMR declined by an average of 5% per year (crude relative risk, RR: 0.95; 95% confidence interval, CI: 0.94-0.97).

孕产妇死亡率年均下降5%(未经整理分类的相对危险：0.95；95%置信区间：0.94 - 0.97)。

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Pooled relative risk (RR) and 95% confidence interval (CI) were calculated using a random-effects model.

共同的相对危险率和95%的可信区间用一种随机效应模型被计算出来。

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Objective To evaluate the relative risk(RR) of stroke in patients with hypertension using synthetic indexes of cerebrovascular hemodynamics.

目的以脑血管血流动力学综合评估指标，评估高血压患者卒中的相对危险度（RR）。

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Compared to women who never smoked, the risk of SCD was significantly elevated in current smokers (relative risk 2.44) and former smokers (RR 1.40).

FORBES: No Surprise: Smoking and Sudden Cardiac Death Closely Tied