Table 3.
Construct validity between the Korean New KSS and the Korean WOMAC
| Korean WOMAC |
Korean New KSS (preoperative form) | ||||
|---|---|---|---|---|---|
| Subscales | Score Mean ± SD |
Symptom/25 points | Satisfaction/40 points | Expectation/15 points | Activity/100 points |
| Pain/20 points | 11.63 ± 4.25 | −0.53* (< 0.001) | −0.50* (< 0.001) | 0.13 (0.167) | −0.50* (< 0.001) |
| Stiffness/8 points | 4.71 ± 2.13 | −0.35* (< 0.001) | −0.47* (< 0.001) | 0.15 (0.095) | −0.38* (< 0.001) |
| Function/68 points | 40.21 ± 14.62 | −0.51* (< 0.001) | −0.46* (< 0.001) | 0.23 (0.011)* | −0.54* (< 0.001) |
| Total/96 points | 56.55 ± 19.90 | −0.53* (< 0.001) | −0.49* (< 0.001) | 0.21 (0.019)* | −0.53* (< 0.001) |
KSS = Knee Society Score; Spearman’s correlation coefficients (r) when comparing the four KSS subscales with the WOMAC (p value); *significant correlation at p < 0.05.