标准化预告值概念及标化方法探讨

笔者提出标准化预告值（ＳＰＶ）新概念及相应标化方法，本文将不受患病率或样本构成影响，而是在一个指定的标准构成条件下获得的理论预告值定义为标准化预告值，它只随试验的灵敏度和特异度的变化而变化。标准化预告值的意义在于用统一标准去解释、判断和衡量诊断试验的诊断价值。

A New Concept and Method of Standardizing Predictive Value

new concept and method of standardizing predictive value was put forward.The theore- tical predictive value which was not affected by prevalence rate or different component in normal and abnormal groups and was gottenundel the appointed standardizing conditiontbat made the cases in the two groups to besame with each other and to be called standar-dizhg component was defined as standardizingpredictive value, The value will change onlywith the change of sensitivity and specificityof diagnostic test. By the new concept andmethod,the value of diagnostic test can beexplained. judged and expressed in unique standard.