Explain positive predictive value

Reference no: EM13154324

If the same screening test is conducted in two populations, one with a high prevalence of the disease and one with a low prevalence of the disease, assuming the sensitivity and specificity of the screening test are the same, which of the following statements about positive predictive value (PPV) applies:

A. PPV is higher in the screened population with higher prevalence
B. PPV is lower in the screened population with higher prevalence
C. PPV is the same in both populations
D. It cannot be determined

Reference no: EM13154324

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