The same screening test is applied to two comunities X and Y;Y shows more false + ye cases as compared to X. The possibility is -: (A) High sensitivity, (B) High specificity, (C) Y community has high prevalence, (D) Y community has low prevalence
Answer is D. Ans. is 'd' i.e., Y community has low prevalence o Same test is applied on two communities Sensitivity & Specificity, remain the same.