Question
You have developed a new diagnostic test for multiple sclerosis. You assemble 1000 individuals with confirmed multiple sclerosis by the gold standard and 500 individuals without multiple sclerosis. You apply your test and find that 840 patients with multiple sclerosis are correctly identified by your test. Of the 500 individuals without multiple sclerosis, 460 are correctly identified by your test.
a. Calculate the sensitivity and specificity of this test.
b. What do these metrics suggest about the quality of the test?
Source: 250B Problem Set: Question 13.1.1
