Table 3.
Multivariate linear regression models predicting variance in performance in patients with chronic low back pain
| β (95% CI) | Beta | p | r2 change | Model r2 | |
|---|---|---|---|---|---|
| Study 1 (n = 79) | |||||
| Dependent variable: lifting | |||||
| •Gender (female = 0, male = 1) | 14.45 (7.36 to 21.54) | 0.48 | <0.001 | 0.23 | 0.28 |
| •Constant | 17.01 (−9.60 to 43.62) | – | 0.205 | – | |
| Dependent variable: static forward bend | |||||
| •Model r2 = 0.11; None of the independent variables contributed significantly to the regression equation | |||||
| Dependent variable: dynamic forward bend | |||||
| •Model r2 = 0.12; None of the independent variables contributed significantly to the regression equation | |||||
| Study 2 (n = 58) | |||||
| Dependent variable: lifting | |||||
| •Gender (female = 0, male = 1) | 14.94 (6.15 to 23.73) | 0.48 | 0.001 | 0.23 | 0.37 |
| •Pain intensity | −1.83 (−3.65 to −0.01) | −0.29 | 0.049 | 0.08 | |
| •Constant (kg) | 45.70 (25.67 to 65.73) | – | <0.001 | – | |
| Dependent variable: static forward bend | |||||
| •Constant (sec) | 549.15 (336.09 to 762.21) | – | <0.001 | – | 0.27 |
| •None of the other independent variables contributed significantly to the regression equation | |||||
| Dependent variable: dynamic forward bend | |||||
| •Model r2 = 0.18; None of the independent variables contributed significantly to the regression equation |