The evidences of EBM are provided by random controlled trial (RCT), and it is not perfect for clinical use.
循证医学遵循的证据来自随机对照试验，这些证据并非完美。
Study Design. A simple blind, random controlled clinical trial.
研究目的：单盲，随机对照临床试验。
Methods The clinical pathway developed in urban hospital was evaluated by non-random concurrent controlled trial and individual depth interview.
方法采用同期非随机对照试验和个人深入访谈法， 对所建立的专科诊疗路径进行评价研究。
Methods:This is a random and controlled trial.
方法：临床对照随机试验。
Methods:This is a random and controlled trial.
方法：临床对照随机试验。
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