Diagnostic performance of the nrCBV values for discriminating unchanged MGMT methylation status (group MM) from changed MGMT methylation status (group MU) on the basis of the NER of the initial tumor
| Variable | AUC | Sensitivity (%) | Specificity (%) | Cutoff | Standard Error | 95% CI | P |
|---|---|---|---|---|---|---|---|
| Initial tumor | |||||||
| nrCBV mean | 0.889 | 77.78 | 92.31 | >2.594 | 0.073 | 0.682–0.982 | <.0001 |
| nrCBV 90P | 0.846 | 88.89 | 76.92 | >4.159 | 0.091 | 0.630–0.963 | .0001 |
| nrCBV 95P | 0.855 | 66.67 | 92.31 | >6.794 | 0.082 | 0.640–0.967 | <.0001 |
Note:—90P indicates 90th percentile; 95P, 95th percentile; AUC, area under the curve.