Table 6.
SCB Values for the PRO Scores by Anchor Question a
| SCB | AUC b | P | Sensitivity, % | Specificity, % | Achieved SCB, n (%) | |
|---|---|---|---|---|---|---|
| Anchor question 1 | ||||||
| 12-mo postop score | ||||||
| Lysholm | 88.0 | 0.90 | <.001 | 100.0 | 64.6 | 34 (44.7) |
| IKDC-SKF | 85.1 | 0.86 | <.001 | 81.8 | 81.5 | 19 (25.0) |
| Tegner | 6.5 | 0.71 | .028 | 54.5 | 78.5 | 20 (26.3) |
| ACL-RSI | 64.2 | 0.92 | <.001 | 81.8 | 92.3 | 14 (18.4) |
| Net score change | ||||||
| Lysholm | 24.0 | 0.63 | .174 | 72.7 | 53.8 | 38 (50.0) |
| IKDC-SKF | 32.3 | 0.73 | .016 | 81.8 | 60.0 | 35 (46.1) |
| Tegner | 4.5 | 0.67 | .067 | 45.5 | 86.2 | 14 (18.4) |
| Anchor question 2 | ||||||
| 12-mo postop score | ||||||
| Lysholm | 84.5 | 0.80 | <.001 | 91.3 | 67.3 | 38 (50.0) |
| IKDC-SKF | 77.7 | 0.90 | <.001 | 95.7 | 73.1 | 36 (47.4) |
| Tegner | 5.5 | 0.82 | <.001 | 78.3 | 73.1 | 32 (42.1) |
| ACL-RSI | 57.1 | 0.82 | <.001 | 69.6 | 84.6 | 24 (31.6) |
| Net score change | ||||||
| Lysholm | 4.5 | 0.52 | .739 | 91.3 | 30.8 | 49 (64.4) |
| IKDC-SKF | 29.9 | 0.74 | .001 | 82.6 | 59.6 | 34 (44.7) |
| Tegner | 2.5 | 0.67 | .019 | 78.3 | 48.1 | 38 (50.0) |
a Bolded P values indicate a statistically significant AUC value (P < .05). ACL-RSI, Anterior Cruciate Ligament–Return to Sport after Injury; AUC, area under the curve; IKDC-SKF, International Knee Documentation Committee Subjective Knee Evaluation Form; postop, postoperative; PRO, patient-reported outcome; SCB, substantial clinical benefit.
b AUC values: 0.7-0.8 = acceptable, 0.8-0.9 = excellent.