TABLE 2.

Morphological Characteristics Between cases and Controls and Associated Univariate Regression P-values

	Controls		Cases
	n = 198		n = 57	P-value
Perpendicular height
<3 mm	11		3	.008
3-5 mm	41		9
6-8 mm	46		12
9-11 mm	24		7
12-14 mm	22		8
≥15 mm	21		11
Daughter sac	7		5	.10
Multiple lobes	11		3	.87
Aneurysm angle
<46	54		15	.79
46-90	28		7
91-135	41		14
136-180	73		18
Neck diameter
<3 mm	18		3	.45
3-5 mm	100		31
6-8 mm	34		12
9-11 mm	10		3
>11 mm	6		1
Aspect ratio
<1	7		2	.28
1	70		18
2	46		12
3	27		12
4-5	11		4
6-8	3		1
Size ratio
<1	7		1	.01
1	23		6
2	22		7
3	32		9
4-5	59		13
6-8	41		7
>9	14		14
Direction of max diameter, anterior-posterior				.33
Direction of max diameter, cephalad-caudad				.61
Direction of max diameter, medial-lateral				.54
Parent vessel diameter				.06
Calculated aneurysm volume				.41