TABLE 4:

Impact of delay of MR imaging to predict neurologic evolution

	MR Imaging Class					Total
	A	B	C	D	E	Total
No. of images	10	15	14	19	6	64
Sensitivity (%)	89	100	100	100	100	98
Specificity (%)	100	75	33	20	0	35
False positive	0	1	2	4	4	11
False negative	1	0	0	0	0	1
Positive predictive value (%)	100	92	85	83	33	81
Negative predictive value (%)	50	100	100	100	0	86
Overall accuracy (%)	90	93	86	79	33	81

Note.—A indicates MR imaging on days 1–3; B, MR imaging on days 4–7; C, MR imaging on days 8–15; D, MR imaging on days 16–50; E, MR imaging after day 50.