Table 2.
Regression coefficients and model fit of baseline cognitive predictors of quality of life at 36 months.
| Predictors in modela | β | t | p | 95% CI for β |
R | R2 | Adj R2 | Std. Error | Δ R2 | |
|---|---|---|---|---|---|---|---|---|---|---|
| Lower bound | Upper bound | |||||||||
| Baseline MoCA | −0.17 | −2.27 | 0.025 | −1.6 | −0.11 | 0.58 | 0.33 | 0.31 | 14.11 | 0.03 |
| Baseline PD-MCI | 0.2 | 2.91 | 0.004 | 2.86 | 14.95 | 0.6 | 0.35 | 0.34 | 13.7 | 0.04 |
| Baseline factor scores | – | – | – | – | – | 0.64 | 0.41 | 0.38 | 13.36 | 0.13 |
| Baseline Memory/Executive function factor score | −0.11 | −1.28 | 0.203 | −5.4 | 1.16 | – | – | – | – | – |
| Baseline Attention factor score | −0.3 | 3.64 | <0.001 | 2.27 | 7.68 | – | – | – | – | – |
| Baseline Global cognition factor score | −0.09 | −1.03 | 0.305 | −4.8 | 1.52 | – | – | – | – | – |
| Baseline Attention factor score | −0.35 | 4.48 | <0.001 | 3.26 | 8.42 | 0.63 | 0.39 | 0.37 | 13.5 | 0.11 |
MoCA = Montreal Cognitive Assessment, PD-MCI 2 SD = PD-MCI classified using the Movement Disorder Society with 2 standard deviation (SD) cut off.
a
Model also includes: years of education, Movement Disorders Society-Unified Parkinson's Disease Rating Scale Part III score and Geriatric Depression Scale score.