Randomize controlled trail

• 随机对照试验

Randomize controlled trail的用法和样例：

例句

1. During the randomized controlled trial, there was a nonsignificant trend favoring active treatment.
   在随机对照试验中，出现一个有利于治疗组的非显著性趋势。
2. Thus, the results of controlled trials and reiews indicate that antifibrinolytic drugs are effectie hemostatic agents in cardiac surgery.
   因此，对照试验与回顾结果表明抗纤溶药物是心脏手术有效的止血药。