When are observational studies as credible as randomised trials?

被引:399
作者
Vandenbroucke, JP [1 ]
机构
[1] Leiden Univ, Med Ctr, Dept Clin Epidemiol, NL-2300 RC Leiden, Netherlands
关键词
D O I
10.1016/S0140-6736(04)16261-2
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
引用
收藏
页码:1728 / 1731
页数:4
相关论文
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