Question: You are a public health official interested in screening for diabetes in your state’s population. You have recently learned of a newly developed test that produced positive results in 138 of 190 known diabetics and in 24 of 150 persons known not to have diabetes.

a. What is the sensitivity of the new test?

b. What is the specificity of the new test?

c. What is the false-positive rate of the new test?

d. Suppose this test is applied to a population where the estimated prevalence of disease is 10%. Calculate the positive and negative predictive values of the test.