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Diagnostic odds ratio : ウィキペディア英語版
Diagnostic odds ratio

In medical testing with binary classification, the diagnostic odds ratio is a measure of the effectiveness of a diagnostic test. It is defined as the ratio of the odds of the test being positive if the subject has a disease relative to the odds of the test being positive if the subject does not have the disease.
The rationale for the diagnostic odds ratio is that it is a single indicator of test performance (like accuracy and Youden's J statistic) but which is independent of prevalence (unlike accuracy) and is presented as an odds ratio, which is familiar to medical practitioners.
== Definition ==
The diagnostic odds ratio is defined mathematically as:
:\text = \frac
where TP, FN, FP and TN are the number of true positives, false negatives, false positives and true negatives respectively.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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