Table 1:

Comparison of patient demographics and angioarchitectural features between nonhemorrhage and hemorrhage groups

Characteristic	Nonhemorrhage (n = 24)	Hemorrhage (n = 8)	P Value
Age (mean) (range) (yr)^{^a}	36 (8–72)	38 (15–62)	.76
Sex, female^{^a}	10 (50%)	3 (38%)	.69
Spetzler-Martin grade^{^b}	.89
I	3	1
II	12	5
III	8	2
IV–V	1	0
Mean AVM volume (median) (range) (mL)^{^a}	5.6, 4.2 (0.6–19.3)	4.5, 2.9 (0.2–15.6)	.31
Small size (<30 mm)^{^b}	17 (71%)	6 (75%)	1.00
Eloquent location^{^b}	14 (58%)	4 (50%)	.70
Venous drainage^{^b}
Exclusively deep	3 (13%)	2 (25%)	.58
Any deep	11 (46%)	5 (63%)	.69
Associated arterial aneurysm^{^b}	1 (4%)	3 (38%)	.04