Parkinson's disease patients, n=25, mean (SD) | Controls, n=25, mean (SD) | Two-tailed p-value* | |
Age (years) | 65.4 (5.2) | 66.7 (4.4) | 0.325 |
Years of education | 13.9 (3.7) | 13.6 (2.8) | 0.937 |
Years of driving | 45.1 (6.0) | 46.6 (6.1) | 0.533 |
Mini Mental State Examination (MMSE) score | 28.1 (1.4) | 29.1 (0.9) | 0.006 |
Beck Depression Inventory score | 9.0 (4.7) | 6.0 (2.6) | 0.008 |
Epworth Sleepiness Scale score | 7.2 (2.9) | 6.1 (3.3) | 0.223 |
Hoehn and Yahr stage | 1.8 (0.4) | – | |
Disease duration in years | 6.4 (5.4) | – | |
Disease onset age in years | 58.9 (7.7) | – | |
Unified Parkinson's disease Rating Scale—motor score | 14.9 (5.2) | – | |
Levodopa dosage (mg/day)† | 346.5 (267.7) | – |