Diagnostic Test: Critical Appraisal – Part 2 (Interpreting Results)

  • Kameshwar Prasad


Tests with Positive/Negative Results: In the dichotomous situation, we usually use two measures of validity (sensitivity and specificity). You can use only likelihood ratio (see later). Validity refers to the degree of correctness of results. ‘Sensitivity’ and ‘specificity’ are measures of validity.


Likelihood Ratio Acute Myocardial Infarction Acute Myocardial Infarction Serum Ferritin True Positive Rate 
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Copyright information

© Springer India 2014

Authors and Affiliations

  • Kameshwar Prasad
    • 1
  1. 1.Department of Neurology Neurosciences Centre, and Clinical Epidemiology UnitAll India Institute of Medical SciencesNew Delhi DelhiIndia

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