Diagnostic power of the test is reflected by:: (A) Sensitivity, (B) Specificity, (C) Predictive value, (D) Population attributable risk
Answer is C. Diagnostic power of a screening test: Predictive accuracy (it tells the actual no. of people having the disease or not having the disease out of those shown positive or negative by a screening test) Diagnostic power of a screening test to correctly identify disease: positive predictive value (PPV) Diagnostic power of a screening test to correctly exclude a disease: negative predictive value (NPV)