Baseline characteristics
| N | 276 |
|---|---|
| Sex, % male (male: female) | 66.3% (183: 93) |
| Race, % white (n) | 96.4% (266) |
| Age, years | 65.04 [9.6] |
| Formal education, years | 15.58 [3.0] |
| Montreal Cognitive Assessment score | 27·24 [2.3] |
| Duration of PD, months | 6·31 [6.3] |
| MDS-UPDRS part III score | 21.46 [9.0] |
| Duration of follow-up, years | 2.20 [0.8] |
Values are means (SD), n=number.
PD, Parkinson's disease; MDS-UPDRS, Movement Disorders Society Unified Parkinson's Disease Rating Scale.