Intra-cohort analysis of injury incidence on artificial turf and grass
| Artificial turf | Grass | ||||
|---|---|---|---|---|---|
| No | Incidence | No | Incidence | RR (95% CI) | |
| *p<0.05, **p<0.01. | |||||
| RR, Rate ratio. | |||||
| Training injuries (trauma) | |||||
| Total | 124 | 2.42 | 54 | 2.94 | 0.82 (0.60 to 1.13) |
| Slight | 38 | 0.74 | 20 | 1.09 | 0.68 (0.40 to 1.17) |
| Minor | 33 | 0.64 | 10 | 0.54 | 1.18 (0.58 to 2.40) |
| Moderate | 35 | 0.68 | 20 | 1.09 | 0.63 (0.36 to 1.09) |
| Severe | 18 | 0.35 | 4 | 0.22 | 1.61 (0.55 to 4.76) |
| Lower extremity | 115 | 2.24 | 48 | 2.62 | 0.86 (0.61 to 1.20) |
| Sprain | 48 | 0.94 | 12 | 0.65 | 1.43 (0.76 to 2.70) |
| Ankle sprain | 27 | 0.53 | 6 | 0.33 | 1.61 (0.67 to 3.90) |
| Knee sprain | 16 | 0.31 | 6 | 0.33 | 0.95 (0.37 to 2.44) |
| Strain | 32 | 0.62 | 24 | 1.31 | 0.48 (0.28 to 0.81)** |
| Hamstring strain | 14 | 0.27 | 8 | 0.44 | 0.63 (0.26 to 1.49) |
| Groin strain | 7 | 0.14 | 6 | 0.33 | 0.42 (0.14 to 1.24) |
| Match injuries (trauma) | |||||
| Total | 142 | 19.60 | 129 | 21.48 | 0.91 (0.72 to 1.16) |
| Slight | 36 | 4.97 | 35 | 5.83 | 0.85 (0.54 to 1.36) |
| Minor | 44 | 6.07 | 40 | 6.66 | 0.91 (0.59 to 1.40) |
| Moderate | 46 | 6.35 | 41 | 6.83 | 0.93 (0.61 to 1.42) |
| Severe | 16 | 2.21 | 13 | 2.16 | 1.02 (0.49 to 2.12) |
| Lower extremity | 128 | 17.66 | 107 | 17.82 | 0.99 (0.77 to 1.28) |
| Sprain | 51 | 7.04 | 34 | 5.66 | 1.24 (0.81 to 1.92) |
| Ankle sprain | 35 | 4.83 | 16 | 2.66 | 1.81 (1.00 to 3.28)* |
| Knee sprain | 15 | 2.07 | 16 | 2.66 | 0.78 (0.38 to 1.57) |
| Strain | 27 | 3.73 | 37 | 6.16 | 0.60 (0.37 to 0.99)* |
| Hamstring strain | 13 | 1.79 | 14 | 2.33 | 0.77 (0.36 to 1.64) |
| Groin strain | 6 | 0.82 | 9 | 1.50 | 0.55 (0.20 to 1.55) |