They are designed to be non-functional fake medicine, given to the control group in a blind trial.

在他们看来，安慰剂只是一些在实验对象不知情的情况下给对照组使用的毫无药效的假药片儿。

Double-blind trial of aspirin in primary prevention of myocardial infarction in patients with stable chronic angina pectoris. The Swedish Angina Pectoris Aspirin Trial (SAPAT) Group.

稳定型心绞痛患者计划择期冠状动脉支架植入术氯吡格雷无反应病人的患病率。