Injury rates among teams and players stratified into high (n=61 teams, 831 players), intermediate (n=60 teams, 823 players) and low (n=63 teams, 817 players) compliance tertiles of the intervention group and the control group (n=157 teams, 2085 players)
| Teams | Players | |||||
|---|---|---|---|---|---|---|
| Number of injuries | Injury rate* | Rate ratio (95% CI) | Number of injuries | Injury rate* | Rate ratio (95% CI) | |
| Anterior cruciate ligament injury | ||||||
| Low compliance | 3 | 0.07 | 1 (reference) | 5 | 0.14 | 1 (reference) |
| Intermediate compliance | 3 | 0.06 | 0.90 (0.16 to 4.96) | 1 | 0.02 | 0.15 (0.01 to 1.07) |
| High compliance | 1 | 0.02 | 0.28 (0.01 to 2.58) | 1 | 0.02 | 0.12 (0.01 to 0.85) |
| Control | 14 | 0.11 | 1.58 (0.48 to 6.46) | 14 | 0.11 | 0.77 (0.27 to 2.21) |
| Severe knee injury | ||||||
| Low compliance | 7 | 0.16 | 1 (reference) | 17 | 0.48 | 1 (reference) |
| Intermediate compliance | 12 | 0.25 | 1.54 (0.57 to 4.44) | 4 | 0.08 | 0.17 (0.05 to 0.49) |
| High compliance | 5 | 0.10 | 0.61 (0.19 to 2.05) | 3 | 0.05 | 0.10 (0.03 to 0.34) |
| Control | 31 | 0.24 | 1.51 (0.67 to 3.72) | 31 | 0.24 | 0.50 (0.27 to 0.95) |
| Any acute knee injury | ||||||
| Low compliance | 15 | 0.32 | 1 (reference) | 26 | 0.72 | 1 (reference) |
| Intermediate compliance | 15 | 0.33 | 1.03 (0.47 to 2.15) | 9 | 0.19 | 0.26 (0.12 to 0.57) |
| High compliance | 16 | 0.31 | 0.98 (0.45 to 2.05) | 12 | 0.20 | 0.28 (0.13 to 0.55) |
| Control | 47 | 0.34 | 1.07 (0.58 to 2.07) | 47 | 0.34 | 0.48 (0.29 to 0.82) |
*Injury rate is expressed as number of injuries/1000 h.