Table 3.
Cronbach’s α at 11 follow-ups for patients with an ACL injury and after ACL reconstruction
| Follow-ups | n | Cronbach’s α | |
|---|---|---|---|
| K-SES18 | K-SES18 | ||
| present | future | ||
| 10 weeks after ACL injury | 228 | 0.96 | 0.85 |
| 4 months after ACL injury | 206 | 0.95 | 0.85 |
| 8 months after ACL injury | 167 | 0.95 | 0.88 |
| 12 months after ACL injury | 133 | 0.96 | 0.87 |
| 18 months after ACL injury | 88 | 0.95 | 0.91 |
| Preoperativea | 388 | 0.95 | 0.82 |
| 10 weeks after ACL reconstruction | 913 | 0.93 | 0.82 |
| 4 months after ACL reconstruction | 929 | 0.93 | 0.81 |
| 8 months after ACL reconstruction | 877 | 0.94 | 0.81 |
| 12 months after ACL reconstruction | 715 | 0.95 | 0.83 |
| 18 months after ACL reconstruction | 438 | 0.95 | 0.84 |
ACL injury refers to patients treated with rehabilitation, ACL reconstruction refers to patients treated with reconstruction and rehabilitation, K-SES18 the 18-item version of the Knee Self-Efficacy Scale
aFollow-up performed within 6 weeks before ACL reconstruction