正確度與精確度
我們用正確度(accuracy)與精確度(precision)來評估測量的用處。
正確度又稱為效度(validity),亦即測量值與真值(金標準,例如腎絲球過濾率的金標準是菊糖廓清率)間符合的程度,測量值與真值間的差距稱為誤差,誤差有兩種…
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