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Distinguishing accuracy (in percentages).
| Pair of subjects | Features | |
|---|---|---|
| All variables | First two principal components | |
| Mild PD patients–Healthy older individuals | 96.3 | 96.3 |
| Mild PD patients–Healthy young individuals | 92.7 | 89.1 |
| Healthy older individuals—Healthy young individuals | 77.6 | 82.8 |
| Mild PD–Advanced PD patients | 82.5 | 84.2 |
