Table 2.

Absolute Cohen’s d values for each MRI parameter comparing benign voxels versus low grade tumour, high grade tumour and all tumour voxels. MRI parameters ordered by highest to lowest absolute Cohen’s d value based on all tumours. Cohen’s d values < 0.2 represent a negligible effect size, while values above 0.2, 0.5 and 0.8 represent small, medium and large effect sizes respectively

MRI Parameter	Low Grade Tumours	High Grade Tumours	All Tumours
ADC	0.323	0.959	0.644
TTP	0.478	0.548	0.524
Ktrans Parker	0.264	0.759	0.500
Ktrans Weinmann	0.217	0.701	0.453
IRE	0.255	0.591	0.416
iAUGC60	0.252	0.513	0.384
Ve Parker	0.315	0.241	0.286
Ve Weinmann	0.267	0.286	0.277
T2w	0.221	0.045	0.090
AUC	0.030	0.084	0.028
ME	0.022	0.053	0.016