Table 1.
Demographics and clinical characteristics of the HC and PD groups.
| HC | PD | p-Value | |
|---|---|---|---|
| Gender (M/F) | 12/10 | 17/19 | 0.588 |
| Age (Years) | 67.36 ± 7.55 | 68.50 ± 9.17 | 0.627 |
| SD (Yes/No) | 6/16 | 31/5 | <0.001 |
| NP (Yes/No) | 5/17 | 31/5 & | <0.001 |
| EDS (Yes/No) | 1/21 | 13/23 | 0.006 |
| RLS (Yes/No) | 0/22 | 17/19 | - |
| pRBD (Yes/No) | 0/22 | 23/13 | - |
| Course (years) | - | 4.69 ± 2.92 | - |
| HY | - | 1.71 ± 0.55 | - |
| UPDRS I | - | 4.50 ± 1.95 | - |
| UPDRS II | - | 12.83 ± 5.78 | - |
| UPDRS III | - | 18.81 ± 10.36 | - |
| UPDRS IV | - | 7.44 ± 2.27 | - |
| UPDRS total | - | 43.58 ± 17.03 | - |
HC, healthy control group; PD, early Parkinson’s disease group; SD, sleep disorder; NP, nighttime problems; EDS, excessive daytime sleepiness; RLS, restless leg syndrome; pRBD, rapid eye movement sleep behavior disorder; HY, modified Hoehn and Yahr stage; UPDRS, Unified Parkinson’s Disease Rating Scale; &, Scores of PDSS-2 subitems are available in Supplementary Materials; statistically significant p-values (p < 0.05) are highlighted in bold.