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Spearman’s rank correlation coefficients for correlation between patient reported outcome measures (PROMs) and kneeling ability
| PROMs | Correlation |
| WOMAC® pain | 0.62 (p<0.001) |
| WOMAC® stiffness | 0.48 (p=0.002) |
| WOMAC® function | 0.59 (p<0.001) |
| KOOS | 0.64 (p<0.001) |
| painDETECT® | 0.55 (p<0.001) |
| EQ-5D™ | -0.73* (p<0.001) |
*A higher score for EQ-5D™ indicates a better quality of life while a higher score for the other PROMs indicates a worse quality of life.
