Table 4.
Averaged area under the curve (AUC) of the receiver operating characteristic (ROC) analysis on distinguishing between tumors with and without T1w-enhancement and its standard deviation between brackets from all the leave-pair-out sets used for cross-validation for each statistical parameter. Last three columns report the sensitivity, specificity and accuracy taking into account all the sets and the results showed in Table 4.
| Param | Mean AUC (SD) | Sensitivity | Specificity | Accuracy | |
|---|---|---|---|---|---|
| T1 | Mean | 0.62 (0.03) | 59% | 71% | 65% |
| SD | 0.65 (0.03) | 45% | 86% | 65% | |
| Skewness | 0.65 (0.03) | 59% | 73% | 66% | |
| Kurtosis | 0.68 (0.03) | 73% | 73% | 73% | |
| T2 | Mean | 0.54 (0.04) | 41% | 43% | 42% |
| SD | 0.58 (0.03) | 29% | 100% | 64% | |
| Skewness | 0.58 (0.03) | 61% | 43% | 52% | |
| Kurtosis | 0.56 (0.03) | 65% | 35% | 50% | |
| NormT1T2 | Mean | 0.62 (0.03) | 59% | 71% | 65% |
| SD | 0.65 (0.03) | 45% | 86% | 65% | |
| Skewness | 0.66 (0.03) | 61% | 63% | 62% | |
| Kurtosis | 0.68 (0.03) | 73% | 73% | 73% | |
| Normlog | Mean | 0.61 (0.03) | 71% | 71% | 71% |
| SD | 0.52 (0.04) | 73% | 31% | 52% | |
| Skewness | 0.61 (0.03) | 57% | 86% | 71% | |
| Kurtosis | 0.66 (0.03) | 61% | 63% | 62% |
Significant values are in [bold].