Baseline cognition and change scores
| PD-stable (n=62) | PD-progressors (n=11) | Adjusted P value | |
| Baseline cognition (z-score) | |||
| Global cognition | 0.15 (0.52) | −0.12 (0.94) | 0.085 |
| Memory | −0.61 (0.98) | −0.37 (1.09) | 0.071 |
| Attention | 0.77 (1.16) | 0.16 (0.99) | 0.197 |
| Executive function | 0.24 (1.12) | −0.21 (1.49) | 0.915 |
| Visuospatial | 0.23 (1.02) | −1.16 (1.91) | 0.015* |
| Language | −0.71 (1.08) | −1.02 (1.17) | 0.680 |
| Change in cognition at 18 months | |||
| Global cognition | −0.11 (0.61) | −0.49 (0.74) | 0.079 |
| Memory | 0.39 (0.85) | −0.15 (1.28) | 0.029* |
| Attention | −0.22 (0.99) | 0.45 (1.28) | 0.100 |
| Executive function | −0.26 (1.04) | −0.90 (1.95) | 0.082 |
| Visuospatial | −1.40 (1.58) | −1.29 (1.59) | 0.656 |
| Language | 0.03 (1.27) | −0.18 (0.76) | 0.813 |
Multiple regression analysis controlling for gender, age and education.
*p<0.05.
PD, Parkinson’s disease.