Table 6.
The MCIDs for the Various Scores.
| Anchor Based |
Distribution Based |
|||||
|---|---|---|---|---|---|---|
| PROM | AC | Change Difference | MDC | ROC Curve (AUC) | SD | Effect Size |
| KOOS | ||||||
| Pain | 18.8 | 15.3 | 11.0 | 11.1 (0.76) | — | — |
| Symptom | n/a | n/a | n/a | n/a | 8.4 | 3.6 |
| ADL | 17.3 | 16.4 | 9.2 | 10.3 (0.77) | — | — |
| Sport/Recreation | 16.9 | 18.6 | 12.5 | 15 (0.80) | — | — |
| QOL | 19.6 | 12.8 | 15.6 | 18.8 (0.73) | — | — |
| IKDC | 16.4 | 13.2 | 10.8 | 12.6 (0.74) | — | — |
| Lysholm | n/a | n/a | n/a | n/a | 10.5 | 4.2 |
| SF-12 | ||||||
| PCS | 8.2 | 6.2 | 6.5 | 7.2 (0.72) | — | — |
| MCS | n/a | n/a | n/a | n/a | 4.6 | 1.9 |
MCID = minimal clinically important difference; PROMs = patient-reported outcome measures; AC = average change; MDC = minimal detectable change; ROC = receiver operating characteristic; AUC = area under the ROC curve; SD = standard deviation; KOOS = Knee Injury and Osteoarthritis Outcome Score; ADL = activities of daily living; QOL = quality of life; IKDC = International Knee Documentation Committee Subjective Knee Evaluation Form; SF-12, Short Form–12; PCS = Physical Component Summary; MCS = Mental Component Summary; n/a = not available.