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Table 2: Aneurysm characteristics
All Unruptured Aneurysms Wide-Neck Aneurysms
Stent-Coil (n = 137) Coil Alone (n = 224) P Value Stent-Coil (n = 85) Coil Alone (n = 73) P Value
Maximum dimension 7.6 7.8 .46 8.9 10.1 .007
Height is max 43.8% 54.9% .04 42.4% 50.7% .30
Width is max 29.9% 21.4% .07 30.6% 23.3% .30
Depth is max 26.3% 23.7% .58 27.1% 26.0% .88
Max dimension >10 mm 19.7% 21.0% .77 30.6% 47.9% .03
Neck ≥4 mm 62.0% 32.6% <.0001 100% 100% NA
Average neck 4.7 3.5 <.0001 5.6 5.0 .004
Dome/neck radio 1.3 1.8 <.0001 1.2 1.6 <.0001
Dome/parent artery ratio 2.0 2.1 .33 2.2 2.6 .01
Circle of Willis location 44.5% 64.7% .0002 48.2% 72.6% .002
Note:—Max indicates maximum.

	All Unruptured Aneurysms			Wide-Neck Aneurysms
	Stent-Coil (n = 137)	Coil Alone (n = 224)	P Value	Stent-Coil (n = 85)	Coil Alone (n = 73)	P Value
Maximum dimension	7.6	7.8	.46	8.9	10.1	.007
Height is max	43.8%	54.9%	.04	42.4%	50.7%	.30
Width is max	29.9%	21.4%	.07	30.6%	23.3%	.30
Depth is max	26.3%	23.7%	.58	27.1%	26.0%	.88
Max dimension >10 mm	19.7%	21.0%	.77	30.6%	47.9%	.03
Neck ≥4 mm	62.0%	32.6%	<.0001	100%	100%	NA
Average neck	4.7	3.5	<.0001	5.6	5.0	.004
Dome/neck radio	1.3	1.8	<.0001	1.2	1.6	<.0001
Dome/parent artery ratio	2.0	2.1	.33	2.2	2.6	.01
Circle of Willis location	44.5%	64.7%	.0002	48.2%	72.6%	.002