Severity of 529 classified injuries according to absence in days from matches or training sessions during the study period
| Time loss in days | Total number of injuries | Number of injuries partly absence | Number of injuries full absence | Percentage of total number injuries (95% CI) |
|---|---|---|---|---|
| Slight (0 days) | ||||
| Senior | 18 | 18 | 3.4 (2.0 to 5.3) | |
| U-18 | 11 | 11 | 2.1 (1.0 to 3.7) | |
| U-16 | 14 | 14 | 2.6 (1.5 to 4.4) | |
| Overuse | 18 | 18 | 3.4 (2.0 to 5.3) | |
| Traumatic | 25 | 25 | 4.7 (3.1 to 6.9) | |
| Minimal (1–3 days) | ||||
| Senior | 51 | 51 | 9.6 (7.3 to 12.5) | |
| U-18 | 29 | 29 | 5.5 (3.7 to 7.8) | |
| U-16 | 34 | 34 | 6.4 (4.5 to 8.9) | |
| Overuse | 36 | 36 | 6.8 (4.8 to 9.2) | |
| Traumatic | 78 | 78 | 14.7 (11.8 to 18.0) | |
| Mild (4–7 days) | ||||
| Senior | 38 | 38 | 7.2 (5.1 to 9.7) | |
| U-18 | 33 | 33 | 6.2 (4.3 to 8.6) | |
| U-16 | 47 | 47 | 8.9 (6.6 to 11.6) | |
| Overuse | 45 | 45 | 5.3 (3.54 to 7.6) | |
| Traumatic | 73 | 73 | 10.2 (7.9 to 13.3) | |
| Moderate (8–28 days) | ||||
| Senior | 65 | 58 | 7 | 12.3 (9.6 to 15.4) |
| U-18 | 51 | 43 | 8 | 9.6 (7.3 to 12.5) |
| U-16 | 56 | 53 | 3 | 10.6 (8.1 to 13.5) |
| Overuse | 51 | 47 | 4 | 9.6 (7.3 to 12.5) |
| Traumatic | 121 | 107 | 14 | 22.9 (19.3 to 26.7) |
| Severe (>28 days) | ||||
| Senior | 32 | 30 | 2 | 6.0 (4.2 to 8.4) |
| U-18 | 25 | 20 | 5 | 4.7 (3.1 to 6.9) |
| U-16 | 25 | 15 | 10 | 4.7 (3.1 to 6.9) |
| Overuse | 28 | 27 | 1 | 5.2 (3.5 to 7.6) |
| Traumatic | 54 | 38 | 16 | 10.4 (7.9 to 13.3) |
| >2 months | ||||
| Senior | 11 | 9 | 2 | 2.1 (1.0 to 3.7) |
| U-18 | 10 | 8 | 2 | 1.9 (0.9 to 3.4) |
| U-16 | 9 | 5 | 4 | 1.7 (0.8 to 3.2) |
| Overuse | 9 | 8 | 1 | 4.0 (2.5 to 6.0) |
| Traumatic | 21 | 14 | 7 | 6.2 (4.3 to 8.6) |
Incidence is per 1000 athlete participation hours– values in parentheses are 95% CI.