P values for the comparison of tumor grade with respect to rCBV and Ktrans
| Tumor Grade | P Value | |
|---|---|---|
| rCBV | Ktrans (second) | |
| I versus II* | <.0001 | 0.4662 |
| I versus III* | <.0001 | 0.0912 |
| II versus III* | .0005 | 0.4424 |
| I versus II and III† | <.0001 | 0.027 |
| I and II versus III† | <.0001 | 0.068 |
Note.—Grade I = low-grade glioma, grade II = anaplastic astrocytoma, and grade III = GBM.
* Tukey honestly significant difference procedure.
† Unequal variance t test.