Table 1.

Clinical outcome correlation of iterative models of the FCA Severity Score (FCASS). Data for maximum FCASS are shown. Model A includes: petrous, cavernous, and supraclinoid segments of the ICA; M1 and M2 segments of the middle cerebral artery (MCA); A1 and A2 segments of the anterior cerebral artery (ACA). Subsequent models exclude arterial segments in an iterative fashion. Final (optimal) model shown in bold.

Model	Arterial segments excludeda	All FCA subjects (n=41)				Subjects with follow-up (n=33)
		1-year PSOMb	Recurrent stroke			1-year PSOMb	Recurrent stroke
			HR	95% CI	p-valuec		HR	95% CI	p-valuec
A	None excluded	0.13	1.1	(0.97, 1.14)	0.19	0.19	1.05	(0.97, 1.13)	0.24
B	Proximal (petrous/cavernous) ICA	0.037	1.1	(0.91, 1.23)	0.47	0.037	1.05	(0.90, 1.24)	0.53
C	Proximal ICA, A1	0.089	1.10	(0.92, 1.32)	0.30	0.12	1.10	(0.91, 1.34)	0.32
D	Proximal ICA, A1, A2	0.087	1.1	(0.92, 1.35)	0.26	0.14	1.10	(0.91, 1.34)	0.34
E	Proximal ICA, A1, A2, M2	0.11	1.2	(0.89, 1.59)	0.25	0.21	1.18	(0.86, 1.61)	0.31

^aPCA was normal in all cases and not included in any model

^bP-values for trend test for correlation between maximum FCASS and 1-year PSOM (pediatric stroke outcome measure; categorical variable)

^cCox proportional hazard for correlation between maximum FCASS and time to first recurrent AIS