Patient characteristics (n=92)
| n | % | |
| Hoehn and Yahr stage: | ||
| I | 11 | 12.0 |
| I.5 | 8 | 8.7 |
| II | 22 | 23.9 |
| II.5 | 28 | 30.4 |
| III | 17 | 18.5 |
| IV | 2 | 2.2 |
| V | 4 | 4.3 |
| Mean age (y) | 72.0 (10.9) | |
| Mean disease duration (y) | 5.3 (4.1) | |
| Sex (M:F) | 49:43 | |
| Mean age of onset (y) | 66.7 (12.0) | |
| Mean UPDRS score | 23.4 (12.1) | |
| Mean BDI score | 12.0 (10.5) | |
| Mean mini mental state score | 27.3 (4.0) | |
Values in parentheses are SD.