Construct validity of function scales determined by Spearman's correlations at baseline
| Patient NRS | Physician NRS | WOMAC function | Pain assessment | Patient global assessment | Physician global assessment | |
|---|---|---|---|---|---|---|
| Knee OA | ||||||
| Patient NRS (0–10) | 1 | 0.600 (p<0.001) | 0.616 (p<0.001) | 0.666 (p<0.001) | 0.714 (p<0.001) | 0.555 (p<0.001) |
| Physician NRS (0–10) | 1 | 0.458 (p<0.001) | 0.508 (p<0.001 | 0.532 (p<0.001) | 0.785 (p<0.001) | |
| WOMAC function (0–100) | 1 | 0.486 (p<0.001) | 0.530 (p<0.001) | 0.458 (p<0.001) | ||
| Hip OA | ||||||
| Patient NRS (0–10) | 1 | 0.631 (p<0.001) | 0.726 (p<0.001) | 0.708 (p<0.001) | 0.702 (p<0.001) | 0.587 (p<0.001) |
| Physician NRS (0–10) | 1 | 0.567 (p<0.001) | 0.590 (p<0.001) | 0.563 (p<0.001) | 0.769 (p<0.001) | |
| WOMAC function (0–100) | 1 | 0.627 (p<0.001) | 0.538 (p<0.001) | 0.554 (p<0.001) | ||
NRS, numerical rating scale; OA, osteoarthritis; WOMAC, Western Ontario and McMaster Universities osteoarthritis index.