Patient Demographics
| Characteristic | n |
| Age at baseline (y) | |
| Mean ± SD | 56.9 ± 14.9 |
| Range (minimum–maximum) | 21–80 |
| Sex | |
| Male | 25 |
| Female | 22 |
| Mean UPDRS score ± SD for motor | 8.4 ± 6 |
| UPDRS score ± SD for rigidity | 0.7 ± 1.0 |
| UPDRS score ± SD for bradykinesia | 0.6 ± 0.7 |
| Hoehn and Yahr score | |
| 0 | 1 |
| 1.0, unilateral | 19 |
| 1.5, unilateral plus axial involvement | 4 |
| 2.0, bilateral disease without balance impairment | 10 |
| 2.5, mild bilateral disease with recovery on pull test | 5 |
| 3.0, mild to moderate bilateral disease | 6 |
| 4.0, severe disability | 0 |
| 5.0, wheelchair-bound or bedridden | 0 |
| MMSE score at baseline | |
| Mean ± SD | 29.1 ± 1.4 |
| Range (minimum–maximum) | 25–30 |
UPDRS = Unified Parkinson Disease Rating Scale; MMSE = Mini–Mental State Examination.