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Table 5: Demographic, clinical, and angioarchitectural characteristics predictive for embolization complications by univariate analysis
Characteristics OR (95% CI) P Value
Sex 
    Male 0.84 (0.33–2.10) .75
Age, y 
    <18 0.89 (0.31–2.41) .78
    18–49 1.09 (0.37–2.76) .84
    ≥50 1.16 (0.17–11.36) 1.01
Initial presentation 
    Hemorrhage 1.15 (0.59–2.94) .49
    Ischemia 0.65 (0.14–3.27) 1.00
    Headache 1.86 (0.93–5.63) .57
    Seizures 0.64 (0.37–2.00) .55
    No symptoms 0.91 (0.17–4.39) .70
Location 
    Eloquent cortex 2.57 (1.08–3.42) .02
    Noneloquent cortex 0.38 (0.24–0.86) .02
    Midline 0.55 (0.19–2.42) .79
    Deep 1.41 (0.29–2.85) .51
Size 
    ≤3 cm 1.06 (0.42–2.40) .79
    3–6 cm 0.80 (0.33–1.29) .23
    ≥6 cm 2.45 (0.57–5.32) .17
No. of feeders 
    1 0.39 (0.06–1.54) .38
    2 1.75 (0.76–3.21) .26
    ≥3 0.85 (0.47–3.84) .72
Classification of feeders 
    Terminal 0.61 (0.35–1.97) .32
    Perforating 1.64 (0.79–4.58) .25
No. of draining veins 
    1 0.73 (0.43–2.96) .98
    2 1.57 (0.58–3.63) .34
    ≥3 0.62 (0.34–1.89) .43
Drainage classification 
    Exclusive superficial 1.04 (0.77–2.52) .90
    Exclusive deep 4.56 (1.28–9.67) .00
    Combined 0.24 (0.09–0.53) .03
Venous morphology 
    Venous reflux 1.91 (0.51–2.98) .77
    Venous ectasia 2.24 (1.32–9.88) .26
    Venous stenosis 1.50 (0.26–2.34) .19
Coexisting aneurysm 
    Intranidal 0.99 (0.23–3.81) .22
    Perinidal 1.52 (3.72–8.50) .61
Spetzler-Martin classification 
    I–II 2.32 (0.21–9.87) .48
    III 0.58 (0.70–4.05) .54
    IV 1.61 (1.22–4.53) 1.20
    V 0.83 (0.06–10.29) 1.00
Embolization degree 
    Complete 0.87 (0.27–3.02) .27
    Subtotal 0.71 (0.40–1.60) .13
    Partial 1.92 (1.21–4.07) .17
Venous occlusion 1.26 (0.94–2.83) .84