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Methods Inf Med 2015; 54(02): 198-199
DOI: 10.3414/ME14-04-0003
Letter to the Editor
Schattauer GmbH

Youden's Index and the Weight of Evidence

G. Hughes
Further Information

Publication History

received: 20 January 2015

accepted: 22 January 2015

Publication Date:
22 January 2018 (online)

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Summary

By means of Shannon’s relationship between information and probability, Youden’s index for rating diagnostic tests is shown to be a probability-scale analogue of the log-likelihood ratio of a positive test outcome.

Keywords

Youden’s index - log-likelihood ratio - Bayes’ theorem - diagnostic test
 

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