Statistics Notes: Diagnostic tests 1: sensitivity and specificity

The simplest diagnostic test is one where the results of an investigation, such as an x ray examination or biopsy, are used to classify patients into two groups according to the presence or absence of a symptom or sign. For example, the table shows the relation between the results of a test, a liver scan, and the correct diagnosis based on either necropsy, …

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[2]  D G Altman,et al.  Statistics Notes: Diagnostic tests 3: receiver operating characteristic plots , 1994, BMJ.