Stepwise and multiple regression analysis showing predictors of peak oxygen consumption
| Coefficient | F to remove | R | Adjusted R2 | |
|---|---|---|---|---|
| Stepwise regression | ||||
| Step 1 | 0.62 | 0.36 | ||
| RV long axis excursion | 5.05 | 12.05 | ||
| Step 2 | 0.77 | 0.56 | ||
| RV long axis excursion | 11.18 | 23.03 | ||
| RV long axis peak shortening rate | −1.39 | 9.48 | ||
| Step 3 | 0.84 | 0.65 | ||
| RV long axis excursion | 9.93 | 21.80 | ||
| RV long axis peak shortening rate | −1.41 | 12.49 | ||
| Mitral A wave velocity | 5.50 | 5.94 | ||
| Intercept | 12.67 | |||
| Multiple regression | p Value | |||
| RV long axis excursion | 0.0002 | |||
| RV long axis peak shortening rate | 0.0025 | |||
| Mitral A wave velocity | 0.026 |
Mitral A wave velocity, peak velocity of the atrial component of mitral filling; RV, right ventricular.