Table 2:

Risk factors for intracranial aneurysms in patients with aortic aneurysms

	All		AAA Only		TAA Only		TAA and AAA
	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P	OR (95% CI)	P
Age (1-yr increase)	0.99 (0.91–1.08)	.29	0.99 (0.95–1.04)	.61	1.00 (0.97–1.03)	.61	0.96 (0.92–0.98)	.01
AAA size (mm increase)	1.02 (1.01–1.03)	.045	1.01 (0.96–1.07)	.36	–	–	1.04 (1.02–1.06)	.03
TAA size (mm increase)	1.01 (0.97–1.04)	.49	–	–	1.00 (0.96–1.04)	.83	1.02 (0.98–1.06)	.14
Female sex	2.08 (1.49–3.03)	.0002	1.31 (0.68–2.51)	.42	2.32 (1.26–4.26)	.006	4.74 (1.95–11.50)	.0002
Comorbidities
Stroke/TIA	0.83 (0.58–1.20)	.035	0.61 (0.35–1.07)	.08	1.40 (0.76–2.57)	.27	0.51 (0.21–1.21)	.12
CAD	0.68 (0.47–0.99)	.047	0.63 (0.37–1.11)	.11	0.40 (0.18–0.92)	.03	0.97 (0.41–2.28)	.94
HTN	0.93 (0.60–1.46)	.76	0.64 (0.28–1.46)	.29	0.96 (0.51–1.77)	.88	1.06 (0.23–4.94)	.94
DM	0.85 (0.52–1.39)	.52	0.70 (0.36–1.38)	.34	0.43 (0.13–1.45)	.16	2.30 (0.87–6.08)	.13
HLP	0.82 (0.55–1.20)	.31	0.41 (0.21–0.78)	.006	1.26 (0.69–2.30	.54	0.63 (0.25–1.58)	.32
Bicuspid aortic valve	0.72 (0.40–1.32)	.33	NA	.84	0.59 (0.29–1.23)	.16	5.96 (1.25–28.50)	.01
Current/former smoker	1.25 (0.86–1.84)	.24	0.82 (0.47–1.45)	.57	0.94 (0.40–2.20)	.89	3.90 (1.58–9.64)	.002

Note:—CAD indicates carotid artery disease; HTN, hypertension; DM, diabetes mellitus; HLP, hyperlipidemia; NA, not applicable.