Table 2. Regression results obtained for prediction of Parkinson’s disease severity.

	R	R 2	MAE	MedAE	MSE	RMSE
Median Slices	0.915	0.8372	0.1387	0.0168	0.1287	0.3587
Axial Median Slice	0.8734	0.7629	0.196	0.0241	0.1875	0.433
Coronal Median Slice	0.8915	0.7948	0.1868	0. 0253	0.1623	0.4028
Sagittal Median Slice	0.9148	0.8368	0.1608	0.0217	0.1291	0.3592
All Brain Downsized × 3	0.9286	0.8622	0.1576	0.0389	0.1089	0.33
All Brain Downsized × 4	0.8774	0.7698	0.2252	0.0557	0.1821	0.4267