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The interpretation of laboratory results
1Department of Population Medicine, Ontario Veterinary College, University of Guelph, Canada.
Abstract:
This article outlines the concepts of epidemiologic sensitivity, specificity, predictive value, and agreement of tests. These features are important when selecting a test and when interpreting test results. The application of tests to aggregates (herds) of animals and methods to assess the etiologic importance of factors (for example, agents) are introduced.