When the screening cut-off point was lowered to a blood glucose level of 130 mg/dL, 106 out of the 182 persons who tested positive, are actually part of the 10,824 who are non-diabetics. Come up with a new table based on the facts about this new cut-off.

7. Calculate the new NPV of the test at the new cut-off level.

8. What was the effect of the change in cut-off level to the NPV?

a. Increased b. Decreased c. No change