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Table 4 A 50% or more decrease in NIHSS from baseline to 24 h using receiver operating curves by logistic regression analysis

From: Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy

  N Sens (%) Spec (%) PPV (%) OR P AUC AICc BIC
Collateral status: Poor
 OtR (≤ 3.63 vs > 3.63) h 19 70 88.9 87.5 0.73 (0.44–0.98) 0.11 0.79 26.2 27.4
Collateral status: Intermediate
 OtR (≤ 8.08 vs > 8.08) h 25 76.2 100 100 0.58 (0.24–0.85) 0.05 0.92 16.2 18
Collateral status: Intermediate or Good
 OtR (≤ 8.67 vs > 8.67) h 29 75 80 94.7 0.7 (0.52–0.94) 0.03 0.82 24.7 26.9
  1. AUC Area under the curve, AICc Corrected Akaike information criterion, BIC Baysian information criterion, OR Odds ratio, OtR Onset-to-reperfusion time, NIHSS National Institutes of Health Stroke Scale, PPV Positive predictive value, Sens Sensitivity, Spec Specificity