Stepwise multiple linear regression model for change in 6MWD following intervention
| B | SE of B | Standardised β | p Value | R2 (%) | |
|---|---|---|---|---|---|
| Change from baseline to 9 weeks | |||||
| Constant | 58.468 | 21.572 | 0.008 | ||
| Group | 36.595 | 11.722 | −0.296 | 0.002 | |
| Baseline 6MWD (m) | −0.141 | 0.045 | 0.297 | 0.002 | 15 |
| Change from baseline to 6 months | |||||
| Constant | −12.182 | 36.166 | 0.737 | ||
| PASP (mm Hg) | −1.544 | 0.637 | −0.266 | 0.018 | 13 |
| FVC (mL) | 0.021 | 0.010 | 0.224 | 0.044 | |
p Values <0.05 were considered statistically significant. 6MWD, six-minute walk distance; B, unstandardised coefficient; Group, exercise versus usual care with usual care group as reference category; PASP, pulmonary artery systolic pressure; R2, R square—proportion of variation in change in 6MWD explained by the model.