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Demographics (median and 95% confidence intervals). UPSIT: University of Pennsylvania Smell Identification Test, MMSE: Mini-Mental State Examination, UPDRS: Unified Parkinson's Disease Rating Scale.
| PD | Healthy | |
|---|---|---|
| Participants | 20 | 20 |
| Age (years) | 67 (63–70) | 66.5 (62–69) |
| Sex (male/female) | 10/10 | 8/12 |
| UPSIT score (out of 40) | 18.5 (14–23) | 33 (32–35) |
| MMSE | 28.5 (28–29) | – |
| UPDRS part III | 20 (16–21) | – |
| Hoehn & Yahr | 2 (2–2.5) | – |
