Estimating prevalence from the results of a screening test.

Autor: Rogan, W J, Gladen, B
Zdroj: American Journal of Epidemiology; January 1978, Vol. 107 Issue: 1 p71-76, 6p
Abstrakt: This paper deals with some basis properties of screening tests. Such tests purport to separate people with disease from people without. Minimal criteria for such a process to be a test are discussed. Various ways of judging the goodness of a test are examined. A common use of tests is to estimate prevalence of disease; frequency of positive tests is shown to be a bad estimate, and the necessary adjustmants are given.
Databáze: Supplemental Index
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