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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.

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