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Question 8#

Regarding the following table, which of the following is FALSE?

A. Sensitivity = w/(w + y)
B. Specificity = z/(x + z)
C. Positive predictive value (of positive test) = w/(w + x)
D. Negative predictive value (of negative test) = y/(x + z)
E. The screen positive rate can be calculated from the table

Correct Answer is D

Comment:

Answer D

The negative predictive value is calculated as z/(y + z).

The screen positive rate can be calculated as (w + x ) /(w + x + y + z).