Table 2:

Summary of patient characteristics and outcomes

Variable	DID	VBD	P Value
No.	25	139	–
Mean age (SD) (yr)	70.9 (14.2)	60.4 (12.5)	.0002
Age group (yr)
20–29	1 (4.0)	5 (3.6)	<.0001
30–39	0 (0.0)	6 (4.3)
40–49	1 (4.0)	6 (4.3)
50–59	2 (8.0)	44 (31.6)
60–69	7 (28.0)	43 (30.9)
70–79	6 (24.0)	30 (21.5)
≥80	8 (32.0)	5 (3.6)
Sex
Male	21 (84.0)	105 (75.5)	.51
Female	4 (16.0)	34 (24.5)
Indication for imaging
Stroke	13 (52.0)	45 (32.7)	.10
Mass effect	5 (20.0)	25 (18.0)	.81
Other/incidental	7 (28.0)	69 (49.6)	.08
Comorbidities
Abdominal aortic aneurysm or ectasia	10 (62.5)	12 (14.3)	.01
Other visceral aneurysms	4 (25.0)	0 (0.0)	<.0001
Fibromuscular dysplasia	0 (0.0)	0 (0.0)	1.0
Coronary artery disease	10 (40.0)	40 (29.0)	.38
Peripheral artery disease	4 (16.0)	6 (4.3)	.07
Hypertension	22 (88.0)	97 (70.3)	.11
Diabetes mellitus	3 (12.0)	22 (15.9)	.85
Hyperlipidemia	13 (52.0)	73 (52.9)	.96
Smoking	17 (68.0)	22 (15.9)	<.0001
Alcohol abuse	1 (4.0)	7 (5.0)	.82
Sympathomimetic abuse	0 (0.0)	0 (0.0)	1.0
Family history
Abdominal aortic aneurysm	3 (12.0)	9 (6.4)	.58
Ischemic stroke	7 (28.0)	32 (23.0)	.78
Intracranial aneurysm	1 (4.0)	9 (6.4)	.98
Other saccular aneurysms present	7 (28.0)	22 (15.8)	.24
Growth on follow-up	6 (46.2)	30 (21.6)	.09
SAH on follow-up	5 (20.0)	5 (3.5)	.007
Infarct on follow-up	7 (28.0)	18 (13.0)	.10
Clinical status at last follow-up
Good neurologic function	6 (24.0)	80 (57.6)	.004
Poor neurologic function	6 (24.0)	22 (15.8)	.48
Death	13 (52.0)	37 (26.6)	.02
Aneurysm-related death	6 (24.0)	10 (7.2)	.02

Note:—VBD indicates vertebrobasilar dolichoectasia; DID, diffuse intracranial dolichoectasia.