Table 2

Clinical outcome at discharge and at 3 months

	All	Circle of Willis		Carotid score*			P for trend
		Complete	Incomplete	0	1	2
		N=26	N=100	N=6	N=42	N=78
Good clinical outcome at discharge (%)	34 (27)	6 (23)	28 (28)	1 (17)	9 (21)	24 (31)
Risk ratio (95% CI)		0.82 (0.38 to 1.78)	Ref	Ref	1.29 (0.20 to 8.43)	1.85 (0.30 to 11.39)	0.24
Good clinical outcome at 3 months (%)	53 (42)	11 (42)	42 (42)	1 (17)	14 (33)	38 (49)
Risk ratio (95% CI)		1.01 (0.61 to 1.67)	Ref	Ref	2.00 (0.32 to 12.59)	2.92 (0.48 to 17.75)	0.05

*Carotid score 0—no carotid artery supplying cerebral circulation; carotid score 1—one carotid artery supplying cerebral circulation; carotid score 2—two carotid arteries supplying cerebral circulation.