placebo无效的话，比它好50%还是无效。

来源: uptrend 于 2020-06-30 16:34:32 [档案] [博客] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

回答: 50% more effective than placebo (a low bar compared to vaccines 由 Phoenix16 于 2020-06-30 15:31:41

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