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Demographic and clinical characteristics
| Variable | Patient | Informant |
|---|---|---|
| Mean (SD) or % | ||
| Age (# years) | 67.4 (9.1) | 62.8 (10.7) |
| Sex (% male) | 80.3% | 21.1% |
| Race (% white) | 98.6% | 97.2% |
| Education (# years) | 14.8 (2.6) | 14.8 (2.9) |
| PD duration (# years) | 9.2 (6.4) | N/A |
| Hoehn and Yahr stage | 2.4 (0.7) | N/A |
| Levodopa dosage (mg/day) | 598.1 (470.9) | N/A |
| Dopamine agonist use (% yes) | 60.6% | N/A |
| History of DBS (% yes) | 25.4% | N/A |
