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本文试图从以下几个方面讨论循证医学对药物临床试验的要求:（1）研究对象;（2）分组方法;（3）干预措施;（4）观察方法;（5）统计处理。
This article attempts to discuss evidence-based medicine from the following aspects of drug clinical trials requirements: (1) study; (2) grouping; (3) interventions; (4) observation methods;