在美国、丹麦和英国进行了大规模的随机对照试验已显示粪便隐血试验能降低结直肠癌患者的病死率 ,在根据这一证据努力完成群体大便隐血试验以前 ,应谨慎地对其在人群筛查中的意义及经济效益作重新评价。方法 :为评价筛查的意义 ,作者对已公布的美国人群中有随机对照试验的 3组 Large-scale randomized controlled trials in the United States, Denmark, and the United Kingdom have shown that fecal occult blood tests can reduce mortality in patients with colorectal cancer, and should be carefully screened for population screening before attempting to complete the group fecal occult blood test based on this evidence. The reevaluation of the meaning and economic benefits of the investigation. Methods: To evaluate the significance of screening, the authors of three groups of randomized controlled trials among the published U.S. population