placebo group的用法和樣例：
例句
- Aderse eents did not differ significantly between the risedronate and placebo groups, the inestigators say.
研究人員說(shuō)，治療組和安慰劑組的不良反應發(fā)生率無(wú)顯著(zhù)差異。 - Although myalgia and pyrexia were more common in treatment groups, dropout rates related to treatment were similar to those in the placebo group.
盡管治療組中，肌痛與發(fā)熱更為常見(jiàn)，但由于治療反應而推出的比例，與安慰劑組類(lèi)似。
