Baseline demographics
| Variable | ACL injuries (n=279) | Other knee injuries (n=101) |
| Age, mean (range) (years) | 25 (15–40) | 25 (15–40) |
| Male/female, n (%) | 136/143 (49/51) | 56/45 (55/45) |
| BMI>25, n (%) | 79 (29)4 | 33 (34)4 |
| Occupation, n (%) | ||
| Student | 121 (44) | 38 (39) |
| Employed | 147 (53) | 57 (58) |
| Other | 8 (3)3 | 3 (3)3 |
| Activity at injury, n (%) | ||
| Football (soccer) | 110 (39) | 36 (36) |
| Floorball | 34 (12) | 5 (5) |
| Skiing | 55 (20) | 14 (14) |
| Handball | 17 (6) | 2 (2) |
| Basketball | 6 (2) | 0 (0) |
| Sports on ice† | 2 (1) | 9 (9) |
| Spare time | 8 (3) | 11 (11) |
| Other sports | 49 (18)2 | 33 (33)3 |
| Physical activity level, n (%) | ||
| Elite | 62 (23) | 11 (13) |
| Competitive | 100 (37) | 33 (38) |
| Recreational | 91 (34) | 29 (33) |
| Other | 17 (1) | 14 (16) |
| Goal to return to preinjury physical activity, n (%) | 257 (93) | 87 (94) |
| Recovery expectation‡, n (%) | ||
| <6 months | 136 (50) | 81 (86) |
| >6 months | 120 (44) | 9 (10) |
| Will never recover | 18 (7)5 | 3 (4)7* |
Superscript number indicates number of participants with missing data.
*Significantly different to ACL injury group (p<0.05).
†Ice-hockey and bandy.
‡Question for recovery expectation: ‘when do you think your knee will be recovered to the same level as before the injury?’.
BMI, body mass index.