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Table 2: 
Results of univariate analysis looking at any complication (transient or permanent neurologic deficit) during embolization*
CriteriaOdds Ratio (95% CI)P value
Male Gender0.80 (0.38–1.69).56
Presenting Symptom
    Hemorrhage0.96 (0.42–2.23).93
    Seizure0.68 (0.30–1.52).35
    Headache0.71 (0.23–2.19).55
    Neurologic deficit1.90 (0.76–4.73).17
    Incidental finding1.82 (0.46–7.23).40
mRS score at diagnosis
    0–20.90 (0.28–2.88).86
    3–51.11 (0.35–3.52).86
AVM Features
    Eloquent cortex involved1.48 (0.57–3.84).43
    Deep venous drainage1.07 (0.5–2.3).86
Spetzler-Martin grade
    I and II1.50 (0.15–15.46).73
    III0.64 (0.07–6.14).69
    IV1.09 (0.11–10.35).94
    V1.88 (0.19–18.32).59
Basal ganglia location2.11 (0.88–6.10).09
Nidal volume reduction (%)
    0–240.03 (−0.77–0.83).96
    25–49−0.19 (−0.63–0.25).65
    50–74−0.19 (−0.59–0.21).63
    >740.35 (−0.04–0.74).37
Number of embolization sessions
    10.09 (−0.34–0.52).82
    2−0.61 (−1.06–0.16).18
    30.23 (−0.22–0.68).61
    4+0.31 (−0.11–0.73).46
Number of pedicles embolized
    1−0.33 (−0.68–0.02).34
    20.29 (−0.05–0.63).38
    3+0.14 (−0.28–0.56).73
  • Note:—CI indicates confidence interval.
  • * All data reflect complication rates per patient (n = 192), except for number of pedicles embolized, which reflects rates per session (n = 489).