Table 3.

Comparison of average size, SD and coefficient of variation (CV) of size of CBAN, both absolute and relative, in patients with and without cerebral aneurysms (independent sample t-test)

	SD of CBAN measurement (SD, mm)	Coefficient of variation (CV)	Size of CBAN (mm)	SD of relative size of CBAN	Coefficient of variation (CV) of Relative size
	Average (SD)	Average (SD)	Average (SD)	Average (SD)	Average (SD)
Patients without cerebral aneurysms (n=62)	0.86 (0.22)	34.9 (10.0)	2.51 (0.25)	0.34 (0.10)	34.73 (9.77)
Patients with one or multiple cerebral aneurysms (n=83)	0.96 (0.23)	38.2 (9.2)	2.52 (0.26)	0.38 (0.09)	38.18 (9.15)
Significant (two-tailed, p-value)	0.015	0.038	0.708	0.036	0.033

CBAN, cerebral basal arterial network.