Table 5 ROC curve of TBF, RTBF in differentiating low- from high-grade tumors (AUC: area under curve, PPV: Positive predictive value, NPV: Negative predictive value)
AUC (95% CI) | P value | Cut off point | Sensitivity% | Specificity% | PPV% | NPV% | Accuracy% | |
|---|---|---|---|---|---|---|---|---|
aTBF | 0.979 (0.934–1.0) | < 0.001* | 54.29 | 87.5 | 95.8 | 87.5 | 95.8 | 93.8 |
rTBF | 0.969 (0.906–1.03) | < 0.001* | 2.84 | 87.5 | 95.8 | 87.5 | 95.8 | 93.8 |