Table 4.

Multivariable logistic regression analysis comparing three different models: full, Spetzler-Martin score, and supplementary score. OR = odds ratio; CI = confidence interval.

	Model 1: Full Model				Model 2: S-M Score Model				Model 3: Supplemental Score
Variable	OR	95% CI		P value	OR	95% CI		P value	OR	95% CI		P value
AVM size (cm)	1.23	0.98	1.55	0.068	1.31	1.07	1.62	0.009	---	---	---	---
Deep venous drainage	2.12	1.10	4.08	0.025	1.31	0.75	2.29	0.344	---	---	---	---
Eloquence	1.71	0.94	3.10	0.079	1.60	0.92	2.80	0.099	---	---	---	---
Age (per 10 years)	1.42	1.18	1.70	<0.001	---	---	---	---	1.40	1.17	1.67	<0.001
Unruptured presentation	2.68	1.40	5.15	0.003	---	---	---	---	2.21	1.22	4.01	0.009
Diffuse	1.79	0.78	4.10	0.171	---	---	---	---	2.33	1.06	5.14	0.035
Deep perforating artery supply	0.62	0.27	1.45	0.270	---	---	---	---	0.89	0.40	2.00	0.784
Log time since last surgery (yr)	0.78	0.67	0.91	0.002	0.83	0.72	0.95	0.009	0.76	0.65	0.88	<0.001
Area under the ROC curve (95%CI)	0.78 (0.72-0.83)				0.66 (0.59-0.73)				0.73 (0.67-0.80)