Diagnostic Test: Critical Appraisal – Part 2 (Interpreting Results)
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.
KeywordsLikelihood Ratio Acute Myocardial Infarction Acute Myocardial Infarction Serum Ferritin True Positive Rate
- Cebul RD, Beck LH. Teaching clinical decision-making. New York: Praeger; 1985.Google Scholar
- Department of Clinical Epidemiology and Biostatistics, McMaster University. Interpretation of diagnostic data. V. How to do it with simple math. Can Med Assoc J. 1983;129-22-29.Google Scholar
- Grinder PF, Mayewski RJ, Mushlin AI, Greenland P. Selection and interpretation of diagnostic tests and procedure. Principles and applications. Ann Intern Med. 1981;94:557–600.Google Scholar