Diagnostic tests and information theory



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	Articles by Mossman, D.
	Articles by Somoza, E.

J Neuropsychiatry Clin Neurosci 1992; 4:95-98
Copyright © 1992 by American Neuropsychiatric Association

REGULAR ARTICLES

Diagnostic tests and information theory

D Mossman and E Somoza
Psychiatry Service, Department of Veterans Affairs Medical Center, Cincinnati, OH 45220.

Our previous article showed that the discriminating properties of most diagnostic tests in medicine can be characterized by assuming that tests separate disordered and nondisordered individuals into two overlapping, normal distributions with different means and standard deviations. In this article, we explore the relationship between this way of describing diagnostic tests and the reason that clinicians use them: to gain information about their patients and to reduce diagnostic uncertainty.

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