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
All comprise inherent propeies of a screening test except- 
Select and explain. 
A. Sensitivity, B. Specifivity, C. Yield, D. Predictive accuracy
C: Yield
Answer: C: Yield 
Explanation: Ref :Parks 23rd edition pg 140 Yield is not an inherent propey of screening test. Yield is the amount of previously unrecognized disease that is diagnosed as a result of screening effo. It depends on many factors : Sensitivity and specificity of the test Prevalence of disease Paicipation of individuals in the detection programme.