True about PPV is
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
Increases with prevalence
Decreases with prevalence
No relation with prevalence
Accuracy
Epidemiology