每年体检在降低死亡率方面没有效果的一种解释是，对于急性原因导致的死亡或残疾，它几乎没有作用。
One explanation for the ineffectiveness of the annual exam in reducing the death rate is that it does little to avert death or disability from acute problems.
方法：用微柱凝胶法对693例标本进行不规则抗体筛选，用酶、抗球蛋白法进行鉴定，并观察不规则抗体检出的阳性率。
Methods: Employed irregular antibody screening on 693 samples with microcolumn gel agglutination assay, and identified with enzyme and antiglobulin method to observe the positive rate.
研究人员系统性地回顾了1963至1999年的14项随机对照试验，评估了每年健康体检对生存率和死亡率的影响。
In asystematic review of 14 randomized controlled trials conducted between 1963 and1999, researchers evaluated the effect of annual health checkups on morbidityand mortality.
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