TABLE 2.
P-values for Univariate and Multivariate 44 Feature Analysis
| Sequence | Feature | Univariate analysis | Multivariate (stepwise) analysis |
|---|---|---|---|
| P-value | P-value | ||
| Pre-contrast | Energy | 0.0498 | 0.2108 |
| Contrast | 0.8754 | 0.5731 | |
| Entropy | 0.1988 | 0.4688 | |
| Homogeneity | 0.5765 | 0.6840 | |
| Min | 0.0670 | 0.4013 | |
| Max | 0.7127 | 0.6378 | |
| Standard deviation | 0.7413 | 0.5647 | |
| Variance | 0.5205 | 0.6396 | |
| Skewness | 0.9775 | 0.4173 | |
| Kurtosis | 0.3985 | 0.6078 | |
| Postcontrast 1 | Energy | 0.9935 | 0.9174 |
| Contrast | 0.4788 | 0.3750 | |
| Entropy | 0.8149 | 0.8424 | |
| Homogeneity | 0.5827 | 0.6004 | |
| Min | 0.1754 | 0.9958 | |
| Max | 0.9815 | 0.8323 | |
| Standard deviation | 0.6339 | 0.2933 | |
| Variance | 0.7188 | 0.9262 | |
| Skewness | 0.9934 | 0.7341 | |
| Kurtosis | 0.5510 | 0.0056 | |
| Postcontrast 2 | Energy | 0.3218 | 0.7608 |
| Contrast | 0.6605 | 0.4359 | |
| Entropy | 0.6018 | 0.9950 | |
| Homogeneity | 0.8398 | 0.7665 | |
| Min | 0.1248 | 0.7339 | |
| Max | 0.9571 | 0.8278 | |
| Standard deviation | 0.7614 | 0.3637 | |
| Variance | 0.5812 | 0.8813 | |
| Skewness | 0.9824 | 0.9391 | |
| Kurtosis | 0.1413 | 0.8997 | |
| Postcontrast 3 | Energy | 0.2089 | 0.7826 |
| Contrast | 0.6860 | 0.4106 | |
| Entropy | 0.4385 | 0.9264 | |
| Homogeneity | 0.9273 | 0.7433 | |
| Min | 0.0727 | 0.7001 | |
| Max | 0.9276 | 0.8404 | |
| Standard deviation | 0.8256 | 0.4211 | |
| Variance | 0.5174 | 0.7672 | |
| Skewness | 0.9873 | 0.7157 | |
| Kurtosis | 0.0228 | 0.0005 | |
| Morphological features | Eccentricity | 0.9191 | 0.5109 |
| Euler Number | 1.0000 | 1.0000 | |
| Solidity | 0.3065 | 0.7391 | |
| Extent | 0.9535 | 0.9030 | |
| Clinical features | Volume | 0.8681 | 0.7837 |
| Menopausal status | 0.1555 | 0.2097 | |
| Histologic grade | 0.0365 | 0.5821 | |
| Nuclear grade | 0.0064 | 0.0105 | |
| Axillary nodes | 0.7677 | 0.4520 | |
| Age | 0.3531 | 0.2757 |