Baseline characteristics of participants
| Patient characteristics | TAU | TRAK-ACL | Site 3 | Site 1 |
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |
| Age | 28.4 (8.2) | 30.8 (11.4) | 29.0 (9.0) | 29.82 (10.2) |
| Site | n25 | n26 | n10 | n41 |
| Freq (%) | Freq (%) | Freq (%) | Freq (%) | |
| Gender | ||||
| Female | 12 (48.0) | 11 (42.3) | 3 (30.0) | 20 (48.8) |
| Male | 13 (52.0) | 15 (57.7) | 7 (70.0) | 21 (51.2) |
| Ethnicity | ||||
| Asian | 1 (4.0) | 0 (0.0) | 0 (0.0) | 1 (2.4) |
| Asian other | 0 (0.0) | 1 (3.9) | 0 (0.0) | 1 (2.4) |
| Black | 3 (12.0) | 2 (7.7) | 0 (0.0) | 5 (12.2) |
| Mixed black and white | 2 (8.0) | 1 (3.9) | 0 (0.0) | 3 (7.3) |
| Mixed other | 1 (4.0) | 0 (0.0) | 0 (0.0) | 1 (2.4) |
| Mixed white and Asian | 0 (0.0) | 1 (3.9) | 0 (0.0) | 1 (2.4) |
| South Asian | 0 (0.0) | 2 (7.7) | 0 (0.0) | 2 (4.9) |
| White | 18 (72.0) | 19 (73.1) | 10 (100) | 27 (65.9) |
| Education level | ||||
| A level or equivalent* | 3 (12.0) | 5 (19.2) | 1 (10.0) | 7 (17.1) |
| Degree/higher degree | 18 (72.0) | 13 (50.0) | 6 (60.0) | 25 (61.0) |
| Diploma higher education | 2 (2.0) | 4 (15.4) | 3 (30.0) | 3 (7.3) |
| GCSE or equivalent† | 2 (2.0) | 4 (15.4) | 0 (0.0) | 6 (14.6) |
| Employment status | ||||
| Currently employed | 20 (80.0) | 19 (73.1) | 7 (70.0) | 32 (78.0) |
| Student | 5 (20.0) | 7 (26.9) | 3 (30.0) | 9 (22.0) |
*A level: subject specific qualification for 16–18 years old.
†GCSE: subject specific qualification taken by 14–16 years old.
CONSORT, Consolidated Standard for Reporting Trials; GCSE, general certificate of seconday education; TAU, treatment as usual; TRAK-ACL, taxonomy for the rehabilitation of knee conditions—ACL.