This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Screening, Subject name: Social & Preventive Medicine
Diagnostic power of a test is reflected by 
Select and explain. 
A. image_question, B. image_question, C. image_question, D. image_question
C: image_question
Answer: C: image_question 
Explanation: Diagnostic power of 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, respectively) Diagnostic power of a screening test to correctly identify a disease: Positive predictive value(PPV). Diagnostic power of a screening test to correctly exclude a disease: Negative predictive value (NPV) Ref: Parl 25th edition Pgno: 153