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
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 |