This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
The usefulness of a screening test in a community depends on its: September 2004 
Select and explain. 
A. Sensitivity, B. Specificity, C. Reliability, D. Predictive value
D: Predictive value
Answer: D: Predictive value 
Explanation: Ans. D i.e. Predictive value