Table 4.
Pre- and Postoperative PRO Scores in the No-Difficulty and Some-Difficulties Groups (Anchor Question 1) a
| No-Difficulty Group, n = 11 | Some-Difficulties Group, n = 65 | P | 95% CI b | |
|---|---|---|---|---|
| Lysholm | ||||
| Preoperative | 54.2 ± 32.6 | 52.5 ± 28.5 | .862 | –17.2 to 20.6 |
| 1 y postoperative | 95.7 ± 3.8 | 79.4 ± 15.8 | <.001 | 11.8 to 20.9 |
| Net change | 41.5 ± 32.1 | 26.9 ± 30.3 | .145 | –5.2 to 34.5 |
| IKDC-SKF | ||||
| Preoperative | 49.4 ± 11.8 | 47.3 ± 16.8 | .691 | –8.4 to 12.7 |
| 1 y postoperative | 90.0 ± 9.7 | 73.1 ± 15.1 | .001 | 7.5 to 26.3 |
| Net change | 40.5 ± 14.4 | 25.8 ± 18.6 | .014 | 3.0 to 26.5 |
| Tegner | ||||
| Preoperative | 2.7 ± 2.0 | 2.7 ± 1.8 | .973 | –1.1 to 1.2 |
| 1 y postoperative | 6.9 ± 2.6 | 5.3 ± 1.6 | .077 | –0.2 to 3.4 |
| Net change | 4.2 ± 3.2 | 2.6 ± 1.9 | .141 | –0.6 to 3.7 |
| ACL-RSI | ||||
| 6 mo postoperative | 63.8 ± 26.8 | 43.2 ± 19.9 | .004 | 7.0 to 34.2 |
| 1 y postoperative | 84.5 ± 19.5 | 43.0 ± 19.3 | <.001 | 29.0 to 54.1 |
| Net change | 20.8 ± 21.2 | –0.2 ± 16.0 | <.001 | 10.0 to 31.8 |
a Data are presented as mean ± SD. Bolded P values indicate a statistically significant difference between groups (P < .05). ACL-RSI, Anterior Cruciate Ligament–Return to Sport after Injury; IKDC-SKF, International Knee Documentation Committee Subjective Knee Evaluation Form; PRO, patient-reported outcome.
b 95% CI for the difference between the no-difficulty and some-difficulties groups.