Table 2. Binary Logistic Regression Analysis of Potential Predictors for Failed Aneurysm Occlusion.

Factors	Subgroups	Occluded / Total no. IA	Occlusion rate	P-value
Gender	Men	2/5	40%	0.033
	Women	21/24	87.5%
IA location	PComA	0/4	0%	0.999
	Cavernous ICA	4/5	80%
	Paraclinoid ICA	17/17	100%
	Supraclinoid ICA+	2/3	66.7%
Size*	Small	19/23	82.6%	0.145
	Large	4/6	66.7%
Aspect ratio	< 1.5	12/16	75.0%	0.528
	> 1.5	11/13	84.6%
Neck width	< 4 mm	14/15	93.3%	0.081
	> 4 mm	9/14	64.2%
Prior treatment	None	21/25	84%	0.145
	Prior treatment	2/4	50%
No. of PED used	One	17/19	89.5%	0.079
	Two	6/10	60%

^*Size: small (<10 mm), large (10-25 mm).

+ Other than PComA lesions.

IA, Intracranial aneurysm; PComA, posterior communicating artery; ICA, internal carotid artery