Table 3. Distribution- and Anchor-Based MCIDs From Current and Previous Studies.
| Patient-reported outcome measure | Distribution-based MCID | Anchor-based approach | Distribution-based approach in Blevins et al, 2019 (0.5 SD of change score) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| SAPS total score (mean of all items) >50 | All SAPS items >50a | Paulsen et al, 2014 | Lyman et al, 2018 | ||||||
| 0.5 SD of preoperative scores | 0.5 SD of change scores | MCID | AUC | MCID | AUC | ||||
| KOOS | |||||||||
| JR | 6.4 | 8.7 | 17.5 | 0.83 | 20.8 | 0.86 | NA | 14 | NA |
| Total | 35.4 | 48.5 | 82.9 | 0.91 | 91.8 | 0.91 | NA | NA | NA |
| Pain | 8.1 | 10.2 | 22.3 | 0.83 | 25.0 | 0.88 | NA | 18 | 10.3 |
| Symptoms | 9.5 | 11.1 | 10.8 | 0.80 | 14.3 | 0.92 | NA | 7 | 12 |
| ADL | 8.7 | 10.3 | 22.1 | 0.84 | 24.6 | 0.82 | NA | 16 | 10 |
| Sport and recreation | 9.9 | 15.6 | 17.5 | 0.80 | 17.5 | 0.75 | NA | NA | 15.8 |
| Quality of life | 7.8 | 13.4 | 12.5 | 0.88 | 12.5 | 0.88 | NA | 17 | 13.2 |
| HOOS | |||||||||
| JR | 7.0 | 10.1 | 18.2 | 0.95 | 17.6 | 0.97 | NA | 18 | NA |
| Total | 37.1 | 53.8 | 77.1 | 0.94 | 77.1 | 0.99 | NA | NA | NA |
| Pain | 7.8 | 10.3 | 27.5 | 0.89 | 25.0 | 0.96 | 24 | 36 | NA |
| Symptoms | 8.9 | 10.8 | 17.0 | 0.77 | 20.0 | 0.99 | NA | 20 | NA |
| ADL | 8.3 | 11.1 | 19.1 | 0.94 | 19.1 | 0.98 | NA | 14 | NA |
| Sport and recreation | 9.8 | 16.8 | 16.7 | 0.90 | 16.7 | 0.92 | NA | NA | NA |
| Quality of life | 8.6 | 13.9 | 6.0 | 0.93 | 7.0 | 0.98 | 17 | 13 | NA |
Abbreviations: ADL, activities of daily living; AUC, area under the curve; HOOS, Hip Disability and Osteoarthritis Outcome Score; JR, joint replacement; KOOS, Knee Injury and Osteoarthritis Outcome Score; MCID, minimal clinically important difference; NA, not available; SAPS, Self-Administered Patient Satisfaction Scale.
a
Recommended values for a veteran population.