Table 1.
Characteristics of patients with Parkinson’s disease and normal controls
| Groups | N | Sex (Male/Female) | Age (Mean ± SD) | H & Y stage | Mean MMSE score | Mean education (years) | Mean duration of PD (years) |
|---|---|---|---|---|---|---|---|
| NC | 20 | 10/10 | 59.36+6.36 | NA | 28.90±0.96 | 9.50±2.74 | NA |
| PD | 35 | 19/16 | 61.86+8.98 | 2.0±0.84 | 28.94±1.05 | 8.54±3.25 | 4.81±3.43 |
| Non-MCI | 14 | 5/9 | 58.5±9.22 | 1.42±0.57 | 29.07±1.07 | 8.78±3.92 | 3.23±2.35 |
| MCI | 21 | 14/7 | 63.8±8.58 | 1.77±0.82 | 28.85±1.06 | 8.38±2.80 | 5.24±3.30 |
NC, normal controls; PD, Parkinson’s disease; MCI, mild cognitive impairment; NA, nonapplicable; H & Y stage, Hoehn and Yahr stage; MMSE, Mini-Mental State Examination.