Demographic data of the patients and their history of Parkinson's disease
| Patient No | Sex/age | Duration of symptoms (y) | Duration of levodopa treatment (y) | Duration of fluctuations (y) | Modified Hoehn and Yahr stage |
| 1 | M/75 | 8 | 5 | 2 | 2 |
| 2 | F/70 | 10 | 10 | 5 | 3 |
| 3 | F/70 | 4 | 4 | 1 | 3 |
| 4 | M/44 | 2 | 1 | 1 | 2 |
| 5 | F/62 | 5 | 4 | 1 | 2.5 |
| 6 | F/66 | 14 | 14 | 10 | 4 |
| 7 | F/77 | 13 | 13 | 5 | 3 |
| 8 | M/71 | 5 | 4 | 2 | 3 |
| 9 | F/59 | 3 | 2 | 1 | 3 |
| 10 | M/63 | 7 | 6 | 4 | 3 |
| 11 | M/74 | 7 | 7 | 4 | 3 |
| 12 | M/64 | 12 | 11 | 4 | 3 |
| 13 | F/75 | 5 | 5 | 2 | 2 |
| 14 | M/65 | 13 | 13 | 3 | 3 |
| 15 | M/75 | 6 | 5 | 3 | 2 |
| Mean | 67.3 | 7.6 | 6.9 | 3.2 | 2.7 |
| SD | 8.5 | 3.9 | 4.2 | 2.3 | 0.5 |