Retention per treatment group and across sites
| Retention | Total | TAU | TRAK-ACL |
| Freq (%) | Freq (%) | Freq (%) | |
| Retention | |||
| Baseline | 51 (100) | 25 (100) | 26 (100) |
| 3 months | 44 (86) | 19 (76) | 25 (96) |
| 6 months | 40 (78) | 17 (68) | 23 (88) |
| Retention by site | Site 3 | Site 1 | |
| Freq (%) | Freq (%) | ||
| Retention | |||
| Baseline | 10 (100) | 41 (100) | |
| 3 months | 7 (70) | 37 (90) | |
| 6 months | 7 (70) | 33 (80) | |
TAU, treatment as usual; TRAK-ACL, taxonomy for the rehabilitation of knee conditions—ACL.