Table 4.

ICAO score and success rate of recanalization surgery.

	OR	95% CI	β coefficient	Point assigned	p-value
C2 I/C ratio < 0.86	19.8	1.7–236.9	2.986	1	0.018*
C7 diameter < 0.175	42.7	2.3–801.9	3.755	1	0.012*

^*p < 0.05;

OR, odds ratio; CI, confidential interval; C2, petrous segment; C7, communicating segment; I/C Ratio, ipsilateral-to-contralateral diameter ratio; ICAO, internal carotid artery occlusion.