Table 3.

Age at Diagnosis Cox Survival Analysis

	Univariable n = 550			Multivariable n = 550
Predictor	HR	95% CI	p-value	HR	95% CI	p-value
AVM nidus size (cm)	1.05	(1.00, 1.10)	0.065	1.13	(1.07, 1.20)	<0.001
Exclusively deep venous drainage	1.26	(0.98, 1.63)	0.077	1.27	(0.95, 1.69)	0.110
Venous ectasia	0.83	(0.69, 0.99)	0.034	0.75	(0.62, 0.91)	0.003
Central location	1.26	(1.05, 1.52)	0.014	1.45	(1.16, 1.81)	0.001
Lobar location	1.04	(0.84, 1.30)	0.716	1.10	(0.75, 1.61)	0.622
Posterior fossa location	0.76	(0.59, 0.98)	0.037	0.72	(0.49, 1.06)	0.099
Aneurysm related to shunt-flow	0.59	(0.48, 0.71)	<0.001	0.53	(0.43. 0.65)	<0.001

These are results for Cox regression analyses using age at diagnosis as the survival time and stratifying by ethnicity and hemorrhagic presentation. The Multivariable model includes all listed predictors.