| Spearman’s Rho value NZ score versus other measures | Group 1 Median Score | Group 2 Median Score | |
|---|---|---|---|
| WOMAC function | 0.54 | 1.92 | 2.57 |
| WOMAC pain | 0.50 | 1.90 | 2.50 |
| Sit to stands in 1 min | –0.52 | 9.00 | 0.00 |
| Pain VAS score | 0.52 | 52.00 | 76.00 |
| Leg extensor power/BMI | –0.54 | 1.18 | 0.29 |
Spearman’s correlation showing association between NZ score and other measures, along with median scores of group 1 (scoring under 55) and group 2 (scoring 55 or over).