Sensitivity and specificity
| Final Diagnosis “Acute ON”a | CE + (Reader 1/Reader 2) | CE – (Reader 1/Reader 2) |
|---|---|---|
| ON+ | 21/21 | 9/9 |
| ON– | 0/2 | 21/19 |
Note:—CE + indicates contrast enhancement; CE −, no contrast enhancement; ON+, optic neuritis; ON–, no optic neuritis.
↵a Reader 1: sensitivity, 21/30 = 70%; specificity, 21/21 = 100%; reader 2: sensitivity, 21/30 = 70%; specificity, 19/21 = 90%.