在预防保健工作中 ,“缺少证据并非没有证据”这条古老的格言甚为重要。Ｅｌｋａｎ等所作的汇总分析 (见本期 2 2 1页 )、Ｓｔｕｃｋ及Ｈａａｓｔｒｅｇｔ等所作的系统性回顾 ,与他们自己及其他研究人员所作的随机对照试验出现明显矛盾 ,这一结果并不奇怪1 3 。在死亡率、机构? In the prevention of health work, the old adage “lack of evidence is not without evidence” is very important. The pooled analysis by Elkan et al. (See page 21), the systematic review by Stuck and Haastregt et al., And the randomized controlled trials conducted by themselves and other researchers, are not surprising . At the mortality rate, the agency?