Table 6.
Stepwise regression analysis estimating multivariate association between preoperative physical outcome measures and physical activity level (independent variables) and physical activity level one year after surgery (dependent variable) (n = 108)
| Step 1 | Step 2 | |||
|---|---|---|---|---|
| Independent variable | Unstandardized Beta (SE) | P-value | Unstandardized Beta (SE) | P-value |
| Gait speed, normal | 0.430 (0.57) | 0.449 | 0.502 (0.53) | 0.348 |
| Gait speed, fast | 0.203 (0.39) | 0.604 | −0.159 (0.38) | 0.677 |
| Quadriceps strength, right | 0.021 (0.02) | 0.325 | 0.020 (0.02) | 0.330 |
| Quadriceps strength, left | −0.011 (0.01) | 0.550 | −0.010 (0.01) | 0.547 |
| ODI item four | −0.123 (0.12) | 0.309 | −0.062 (0.11) | 0.586 |
| Self-rated walking distance | 0.079 (0.13) | 0.548 | 0.084 (0.12) | 0.499 |
| Physical activity level | 0.281 (0.07) | < 0.001 | ||
| R Square = 0.174 | 0.003 | R Square = 0.275 | < 0.001 |
SE Standard Error, ODI Oswestry Disability Index. Bold text p < .05