Findings at first MR imaging and neurologic evolution
| MR Imaging Findings | Good Evolution | Bad Evolution | Total | |
|---|---|---|---|---|
| Moderate to Severe Sequelae | Vegetative State or Death | |||
| (Sub)normal | 6 | 0 | 1 | 7 |
| Abnormal | 6 | 10 | 17 | 33 |
| Total (P < .001) | 12 | 10 | 18 | 40 |
| Sensitivity, 27/28 (96%) | ||||
| Specificity, 6/12 (50%) | ||||
| False positive, 6/12 (50%) | ||||
| False negative, 1/28 (4%) | ||||
| Positive predictive value, 27/33 (82%) | ||||
| Negative predictive value, 6/7 (86%) | ||||
| Overall accuracy, 33/40 (82%) | ||||
Note.—Good neurologic evolution indicates neurologic evolution score ≤2; bad neurologic evolution, neurologic evolution score >2; moderate to severe sequelae, neurologic evolution score ≥2 to <8; vegetative state or death, neurologic evolution score ≥8 to 10; abnormal MR imaging finding, MR imaging score >2; normal or subnormal MR imaging finding, MR imaging score ≤2.