Table 2.

Comparison of ruptured and unruptured clinical features for small and large IAs.

	Small IAs (≤5mm)			Large IAs (>5mm)
	Unruptured n=206 Total(%)	Ruptured n=63 Total(%)	p-value	Unruptured n=105 Total(%)	Ruptured n=39 Total(%)	p-value
Flow Mode Classification
Jet Breakdown	22(11%)	22(35%)	<0.001	29(28%)	23(59%)	0.002
Patient Features
Female	167(81%)	44(70%)	0.058	75(71%)	23(59%)	0.154
Hypertension	114(55%)	35(56%)	0.976	56(53%)	22(56%)	0.742
Smoking	98(48%)	23(37%)	0.122	58(55%)	19(49%)	0.486
IA Family History	29(14%)	6(10%)	0.367	10(10%)	6(15%)	0.320
Previous SAH	17(8%)	11(17%)	0.036	4(4%)	8(21%)	0.001
CAD	20(10%)	8(13%)	0.496	11(10%)	4(10%)	0.956
Dyslipidemia	54(26%)	14(22%)	0.524	23(22%)	7(18%)	0.603
Diabetes	15(7%)	9(14%)	0.126	12(11%)	4(10%)	0.829
Cocaine	4(2%)	2(3%)	0.627	0(0%)	3(8%)	0.019
PKD	5(2%)	1(2%)	1.000	1(1%)	2(5%)	0.122
Multiple IAs	78(38%)	8(13%)	<0.001	26(25%)	10(26%)	0.914
Aneurysm Location
ACA	38(18%)	28(44%)	<0.001	8(8%)	14(36%)	<0.001
ICA	104(50%)	17(27%)	0.001	58(55%)	7(18%)	<0.001
MCA	29(14%)	5(8%)	0.199	12(11%)	5(13%)	0.818
PCOM	7(3%)	5(8%)	0.127	8(8%)	10(26%)	0.004
Posterior	28(14%)	8(13%)	0.855	19(18%)	3(8%)	0.123

ACA=anterior cerebral artery; CAD=coronary heart disease; ICA=internal carotid artery; MCA=middle cerebral artery; PCOM=posterior communicating artery; PKD=polycystic kidney disease; SAH=subarachnoid hemorrhage