Table 5:

Independent predictors of hemorrhagic events in AVM size subdivisions of the no arterial perforation group

Variable	β	Odds Ratio	95% Confidential Interval	P Value^{^a}
Small AVM^{^b}
Premature venous occlusion	3.8	44.3	4.24–462.04	<.001^{^c}
Total embolic agent volume	0.3	1.4	1.07–1.85	<.013^{^c}
Constant^{^d}	−3.6	0.03		<.001
Mid-size AVM^{^b}
Premature venous occlusion	3.1	23.4	3.7–148.4	<.002^{^c}
Constant^{^d}	−2.7	0.06		<.001
Large AVM^{^b}
Premature venous occlusion	24.2	3.2⁻¹⁰	.00	1.00^{^e}
Constant^{^d}	−3.0	0.05		<.001

↵a Binary logistic regression.
↵b Small AVM, the largest diameter ≤3 cm; mid-size AVM, the largest diameters >3 cm and ≤6 cm; large AVM, the largest diameter >6 cm.
↵c Significant.
↵d A mathematic constant (no clinical interpretation).
↵e Nonsignificant.