Question
Social And Preventive Medicine Question on Biostatistics
CA-125 is a marker for the screening of ovarian cancer. To characterize this test, histopathological confirmation of ovarian cancer was done in a cohort of patients. 60/100 women who tested positive for this test had ovarian cancer and 20/100 women who tested negative had ovarian cancer. What is the negative predictive value of this test?
A
20/100
B
40/100
C
60/100
D
80/100
Answer
80/100
Explanation
Solution
The correct option is (D): 80/100.