從55歲到75歲，患癡呆的風險大約是4%

來源: 於 2025-01-13 10:50:34 [舊帖] [給我悄悄話] 本文已被閱讀：次

that mens  population of 55-75

4 out of 100 

it can't be 4% every year after 55, because 1.04^20=219% after 20 years which is invalid #.