Table 3.

Imaging variables associated with END

Variable	No END n=134	END n=34	P	Odds Ratio (CI)†
Site of Arterial Occlusion on CT angiogram
Internal Carotid artery*	9	8	0.003	4.63 (1.62-13.20)
M1 segment of MCA	14	20	<.001	12.25 (5.08-29.50)
M2 segment of MCA	13	3	0.87
Basilar artery	4	1	0.98
Follow up Imaging
A. Arterial territory
Anterior circulation	112	31	0.26
Vertebro-basilar	22	3	0.28
B. Location of ischemic changes
Cortical involvement	64	26	0.003	3.77 (1.59-8.93)
Subcortical	48	5	0.02	3.23 (1.18-8.91)
Brainstem	20	2	0.16
Cerebellum	2	1	0.57
C. Intracerebral haemorrhage	9	11	<.001	6.64 (2.47-17.81)
Hemorrhagic infarction	8	3	0.54
Parenchymal hematoma	1	8	<.001	40.12 (4.9-141.12)
D. New ischemic changes	4	9	<.001	10.02 (2.81-35.36)
E. Cerebral edema	12	5	0.32

*Includes 4 patients with tandem occlusion (END group: n=4). ^† Odds ratio (95% confidence interval) for significant factors on univariate analysis