Table 4.
Regression modelling of gait speed and PCA and JIVE Scores.
| Model | Covariates | β | p-value | Adjusted R2 |
|---|---|---|---|---|
| Model 0 | BMI | −0.079 | 0.21 | 0.24 |
| Age | −0.50 | <0.0001 | ||
| Female | −0.31 | 0.016 | ||
| Model 1 | PC1 | −0.17 | 0.0069 | 0.29 |
| PC2 | −0.031 | 0.61 | ||
| PC3 | −0.11 | 0.075 | ||
| PC4 | −0.14 | 0.022 | ||
| Model 2 | JIVE-JT-1 | 0.21 | 0.00096 | 0.33 |
| J1VE-JT-2 | −0.061 | 0.33 | ||
| J1VE-JT3 | 0.036 | 0.56 | ||
| J1VE-JT4 | −0.0055 | 0.93 | ||
| J1VE-PA-1 | −0.016 | 0.79 | ||
| JIVE-PA-2 | 0.15 | 0.012 | ||
| JlVE-SL-1 | −0.019 | 0.75 | ||
| JIVE-SL-2 | −0.14 | 0.024 | ||
| JIVE-SL-3 | 0.13 | 0.033 | ||
| J1VE-CR-1 | −0.016 | 0.79 | ||
| JIVE-CR-2 | 0.14 | 0.023 | ||
| J1VE-CR3 | 0.049 | 0.34 | ||
| J1VE-CR4 | −0.094 | 0.11 |
*
Model 0 is the baseline model with age, gender, and BMI. Models 1 and 2 include PCA-PC and JIVE scores, respectively. All continuous variables (age, BMI, and all scores) have been centered and normalized.