Fig. 8

ROC curves for time to surgery. A. ROC analysis using M3 foot dorsiflexion recovery as the gold standard, with a best cut-off value of 9.5 months (AUC=0.871, 95% CI=0.661-1.000, P=0.04). B. ROC analysis using M3 toe dorsiflexion recovery as the gold standard, with a best cut-off value of 5.5 months (AUC=0.768, 95% CI=0.582-0.953, P=0.025). C. ROC analysis using S4 sensory function recovery as the gold standard, with a best cut-off value of 5.5 months (AUC=0.853, 95% CI=0.693-1.000, P=0.001). D. ROC analysis using M4 foot dorsiflexion recovery as the gold standard, with a best cut-off value of 5.5 months (AUC=0.785, 95% CI=0.575-0.995, P=0.02). n=25 for panels A and D; n=33 for panel B; n=30 for panel C. ROC, Receiver Operating Characteristic; AUC, Area Under the ROC Curve