Table 2.
Construct validity measured by correlation coefficients
| ATRS | Hypothesis | Result | |
|---|---|---|---|
| FAOS symptoms | 0.77 | Strong correlation | Strong correlation |
| FAOS pain | 0.72 | Strong correlation | Strong correlation |
| FAOS ADL | 0.87 | Strong correlation | Strong correlation |
| FAOS function | 0.84 | Strong correlation | Strong correlation |
| FAOS QOL | 0.86 | Moderate correlation | Strong correlation |
| VISA-A-NL | 0.69 | Strong correlation | Moderate correlation |
| NRS rest | −0.58 | Moderate correlation | Moderate correlation |
| NRS running | −0.75 | Strong correlation | Strong correlation |