Screening and diagnostic testing are sequentially-oriented procedures for progressively analyzing risk. Screening is broadly based and aimed at identifying those at high risk of a disease or condition. Diagnostic testing is designed to more definitively answer the question of whether or not a person has a disease or condition. Understanding the differences among four key measures of evaluation for tests (sensitivity, specificity, positive predictive value and negative predictive value) are necessary for proper utilization of screening tests.
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| http://dx.doi.org/10.1053/j.semperi.2005.12.002 | DOI Listing |
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