Technical Report XI

Wolfram Demonstrations Project

Analysis of Diagnostic Accuracy Measures for Two Combined Diagnostic Tests

T Chatzimichail, AT Hatjimihail

Abstract

This Demonstration shows plots of various accuracy measures for two combined diagnostic tests applied at a single point in time on nondiseased and diseased populations. This is done for differing prevalence of the disease, taking into account the means and standard deviations of the populations and the respective correlation coefficients. The means and standard deviations are expressed in arbitrary units. You can select the following measures of the combined tests using the "plot" popup menu: sensitivity, specificity, positive predictive value, negative predictive value, (diagnostic) odds ratio, likelihood ratio for a positive result, and likelihood ratio for a negative result. These measures are plotted against the sensitivities or the specificities of each single test. You can select them by clicking the respective "versus" button.

Published

2018

Citation

Chatzimichail T, Hatjimihail AT. Analysis of Diagnostic Accuracy Measures for Two Combined Diagnostic Tests. Technical Report XI. Drama: Hellenic Complex Systems Laboratory, 2018. https://www.hcsl.com/TR/hcsltr11/hcsltr11.pdf


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Demonstration