ratio risk, 如果小於一，就說明幹涉組的風險比對照組降低，數字越小說明風險降低越明顯

來源: 落花飄零於 2024-01-24 17:47:00 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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