Association of WOMAC function score with WOMAC pain scores, anxiety and depression scores, voluntary quadriceps strength (MVC), quadriceps activation, and radiographic score in subjects with knee pain. Values are adjusted for age, sex, and BMI in addition to variables shown using multiple linear regression. For bilateral variables, the worst value from either limb has been used in analysis
| Coefficient | Standard error | t | p Value | |
|---|---|---|---|---|
| Constant | −6.06 | 0.53 | 3.23 | 0.30 |
| WOMAC pain score | 0.44 | 0.20 | 2.11 | <0.005 |
| Anxiety | 0.43 | 0.18 | 1.17 | 0.006 |
| Depression | 2.15 | 0.07 | −1.62 | 0.036 |
| MVC (kgF) | −0.11 | 0.02 | −2.20 | 0.11 |
| Activation (%) | −0.05 | 0.16 | 0.19 | 0.03 |
| Radiographic score | 0.03 | 5.58 | −1.09 | 0.85 |
| Degrees of freedom | Sum of squares | Mean squares | ||
| Regression | 9 | 26494.29 | 2943.81 | |
| Residual | 220 | 10412.49 | 47.33 | |
| Total | 229 | 36906.78 | ||
The model has an adjusted r 2 of 0.71.