The gold standard of scientific evidence is the randomised controlled trial, preferably one with a lot of people and held over a long time.
国际上科学证据的标准是由随机对照实验得出的结果，尤其是那些有很多人参与又经过很长时间的实验。
To determine the randomised controlled trial (RCT) evidence for the benefit of corticosteroids (oral or inhaled) in the treatment of pulmonary sarcoidosis.
要确定随机对照试验（RCT）对皮质类固醇（口服或吸入）治疗肺部类肉瘤病效益的证据。
The EPHT trial is the first European randomised controlled long-term hormone therapy trial.
EPHT 临床试验是欧洲首例随机控制的长期应用激素的临床试验。
This study is registered as an International Standard Randomised Controlled Trial, number ISRCTN38354748.
此研究已登记为国际标准随机对照实验，编号为ISRCTN38354748。
This study is registered with the International Standard Randomised Controlled Trial number 34123170.
这项研究注册记录为国际标准随机对照试验，(注册)号为34123170。
This study is registered with the International Standard Randomised Controlled Trial number 34123170.
这项研究注册记录为国际标准随机对照试验，(注册)号为34123170。
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