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TABLE 3: 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.

MR Imaging Findings	Good Evolution	Bad Evolution		Total
MR Imaging Findings	Good Evolution	Moderate to Severe Sequelae	Vegetative State or Death	Total
(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%)