[課業] 流行病學的題目
各位大大好...
小弟有流行病學的統計問題想要問...因為一直解不太出來@@
某大學500位新生分別以A及B兩種方法做血中膽固醇篩檢，A、B篩檢方法之敏感度分別為
80%、90%；其精確度分別為70%、80%。假設根據病歷記載顯示血中膽固醇異常率為40%
若只有A篩檢方法呈現異常反應，才會以B篩檢方法做進一步篩檢（序列篩檢），試求分別
有多少位學生將被篩檢出血中膽固醇異常及正常？
a. 160位為異常，90位為正常
b. 90位為異常，160位為正常
c. 144位為異常，72位為正常
d. 144位為異常，282位為正常
e. 282位為異常，144位為正常
謝謝客位大大<(_ _)>
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