Number (N) and percentage of responses for different response categories with ESs, mean score changes by response category and ANOVA tests for linear trend for the mean score across the three response categories for OKS and its subscales (OKS-PCS and OKS-FCS)
| Better | Same | Worse | |
|---|---|---|---|
| OKS | |||
| N (% of responses) | 30 (33) | 26 (28) | 36 (39) |
| Mean change (SD) | 7.1 (8) | 0.7 (6) | −1.88 (5) |
| ES | 0.7 | 0.1 | −0.2 |
| p Value for linear trend | <0.001 | <0.001 | <0.001 |
| OKS-PCS | |||
| N (% of responses) | 31 (33) | 28 (30) | 38 (35) |
| Mean change (SD) | 17.27 (19) | 2.93 (14) | −2.68 (11) |
| ES | 0.8 | 0.2 | −0.1 |
| p Value for linear trend | <0.001 | <0.001 | <0.001 |
| OKS-FCS | |||
| N (% of responses) | 28 (33) | 26 (31) | 30 (36) |
| Mean change (SD) | 10.63 (14) | 1.11 (16) | −6.35 (14) |
| ES | 0.5 | 0.1 | −0.3 |
| p Value for linear trend | <0.001 | <0.001 | <0.001 |
ANOVA, analysis of variance; ESs, effect sizes; OKS, Oxford Knee Score; OKS-FCS, Functional Component Score; OKS-PCS, Pain Component Score.