Table 4.
MCID Values at 6 Months and 1 Year
| Assessment | MCID (Anchor) | Specificity (%) | Sensitivity (%) | AUC | MCID (Distribution) |
|---|---|---|---|---|---|
| 6 Months | |||||
| IKDC | Unable to compute | 9.7 | |||
| KOOS Symptom | 26.79 | 33.3 | 100.0 | .333 | 9.6 |
| KOOS Pain | 8.33 | 100.0 | 100.0 | 1.000 | 10.3 |
| KOOS ADL | −5.15 | 100.0 | 14.3 | .429 | 9.4 |
| KOOS Sport | 12.50 | 100.0 | 28.6 | .571 | 12.4 |
| KOOS QOL | 12.50 | 55.6 | 50.0 | .417 | 12.2 |
| Kujala vs Function | Unable to Compute | 8.5 | |||
| Kujala vs Symptom | 13.50 | 71.4 | 80.0 | .743 | 9.1 |
| KOOS JR vs Pain | 15.61 | 55.6 | 75.0 | .556 | 7.5 |
| KOOS JR vs Symptom | 20.44 | 28.6 | 100.0 | .557 | 7.6 |
| KOOS JR vs ADL | 1.49 | 88.9 | 30.8 | .479 | 7.7 |
| 1 Year | |||||
| IKDC | 23.57 | 62.5 | 100.0 | .688 | 8.6 |
| KOOS Symptom | 18.86 | 0 | 100.0 | .222 | 10.8 |
| KOOS Pain | 4.17 | 80.0 | 100.0 | .900 | 9.9 |
| KOOS ADL | 7.24 | 83.3 | 66.7 | .850 | 10.7 |
| KOOS Sport | 15.00 | 83.3 | 50.0 | .639 | 14.0 |
| KOOS QOL | 9.38 | 100.0 | 66.7 | .667 | 12.4 |
| Kujala vs Function | 30.5 | 50.0 | 100.0 | .500 | 9.9 |
| Kujala vs Symptom | 30.0 | 0 | 100.0 | .000 | 9.8 |
| KOOS JR vs Pain | 8.16 | 83.3 | 40.0 | .533 | 7.9 |
| KOOS JR vs Symptom | −4.56 | 100.0 | 25.0 | .333 | 8.1 |
| KOOS JR vs ADL | 25.18 | 50.0 | 100.0 | .750 | 8.1 |
Bold indicates AUC > .7. ADL, activities of daily living; AUC, area under the curve; IKDC, International Knee Documentation Committee; JR, joint replacement KOOS, Knee Injury and Osteoarthritis Outcome Score; MCID, minimal clinically important difference; QOL, quality of life.