Incidence (injuries/1000 player training hours) of training injuries on artificial turf and grass in male and female players as a function of injury severity
| Injury severity | Male players | Female players | ||||||
|---|---|---|---|---|---|---|---|---|
| Incidence (95% CI) | Incidence ratio*(95% CI) | p Value(z test) | Incidence (95% CI) | Incidence ratio*(95% CI) | p Value(z test) | |||
| Artificial turf | Grass | Artificial turf | Grass | |||||
| *Incidence ratio values are based on grass as the reference. | ||||||||
| †Includes season ending injuries. | ||||||||
| All injuries | 3.34 (2.90 to 3.86) | 3.01 (2.79 to 3.26) | 1.11 (0.94 to 1.31) | 0.21 | 2.60 (2.17 to 3.10) | 2.79 (2.59 to 3.02) | 0.93 (0.77 to 1.13) | 0.46 |
| Minimal (1–3 days) | 1.03 (0.79 to 1.33) | 1.27 (1.13 to 1.44) | 0.81 (0.61 to 1.07) | 0.14 | 1.04 (0.79 to 1.38) | 0.81 (0.70 to 0.93) | 1.29 (0.94 to 1.76) | 0.11 |
| Mild (4–7 days) | 0.97 (0.75 to 1.3) | 0.62 (0.52 to 0.73) | 1.58 (1.15 to 2.16) | <0.01 | 0.36 (0.22 to 0.58) | 0.68 (0.58 to 0.80) | 0.53 (0.32 to 0.88) | 0.01 |
| Moderate (8–28 days) | 0.85 (0.64 to 1.1) | 0.59 (0.49 to 0.70) | 1.44 (1.03 to 2.01) | 0.03 | 0.62 (0.43 to 0.89) | 0.67 (0.57 to 0.78) | 0.92 (0.62 to 1.37) | 0.70 |
| Severe (>28 days)† | 0.41 (0.27 to 0.61) | 0.52 (0.43 to 0.62) | 0.79 (0.50 to 1.23) | 0.30 | 0.49 (0.33 to 0.74) | 0.54 (0.45 to 0.64) | 0.91 (0.58 to 1.41) | 0.66 |