This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
True about PPV is 
Select and explain. 
A. Increases with prevalence, B. Decreases with prevalence, C. No relation with prevalence, D. Accuracy
A: Increases with prevalence
Answer: A: Increases with prevalence 
Explanation: The predictive value of a positive test indicates the probability that a patient with a positive test result does indeed have the disease in question. The more prevalent a disease, the more accurate will be the predictive value of a positive screening test. Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 153