請問各位前輩先進 剛剛在閱讀一篇paper時不懂其中一段文章 Based on the estimate of PRIS we identified in our study, and assuming a power of 80% and a P < 0.05, a future comparative (i.e., propofol vs. non-propofol) trial would require 2068 patients in each arm to detect a 70% relative decrease in the incidence of PRIS and 10,795 patients in each group to detect a 25% relative decrease in the incidence of PRIS. 請問這篇文章是在說自己的power(指效度嗎) 然後之後為什麼各需要2068人和 10795人去 dectect 各70%和50% 的relative decrease in the incidence呢 完全不懂~~@_@ 請問上一段是什麼意思呢 relative decrease in the incidence又是什麼意思呢 是relative risk嗎? --

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