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Table 3 Quantitative ROC curve analysis cutoff values for tibial nerve CSA and stiffness between patients with DPN and control groups to detect diabetic peripheral neuropathy

From: Diagnostic value of shear wave ultrasound elastography of tibial nerve in patients with diabetic peripheral neuropathy

Variable Mean Stiffness value (at cutoff = 70.6 kPa) CSA by US (at cutoff = 14.5 mm2)
Control group (n = 100 TN) 45.9 ± 23.67 10.1 ± 1.88
DPN group (n = 100 TN) 97.94 ± 19.55 16.72 ± 1.89
P value < 0.001 0.074
Sensitivity (%) 95.4 71
Specificity (%) 94.7 69
AUC (area under curve) 0.963 0.671
NPV (%) 93.5 64.5
PPV (%) 92.8 67.8
  1. CSA cross−sectional area, DPN Diabetic peripheral neuropathy, kPa kilopascals, NPV Negative predictive value, PPV positive predictive value, TN Tibial nerve