Table 1 Patient characteristics in the revision and primary ACLR groups
Revision ACLR group (n = 78) | Primary ACLR group (n = 78) | Mean difference (95% CI) | P | |
|---|---|---|---|---|
Sex, male/female | 33/45 (42/58) | 33/45 (42/58) | ||
Age at follow-up, mean ± SD, y | 29.9 ± 6.0 | 30.2 ± 5.8 | -0.3 (-0.7 − 0.0) | 0.079 |
Educational level | 0.564 | |||
Low (0–9 years) | 1 (1) | 0 (0) | ||
Medium (10–14 years) | 33 (42) | 31 (40) | ||
High (≥ 15 years) | 44 (56) | 47 (60) | ||
Occupation | ||||
Changed occupation due to the knee injury | 9 (12) | 3 (4) | 0.083 | |
Worker, mainly sedentary | 41 (53) | 36 (46) | 0.637 | |
Worker, mainly physical | 23 (29) | 30 (39) | ||
Student | 14 (18) | 12 (15) | ||
Family history of ACL injury | 31 (40) | 18 (23) | 0.024 | |