2010 | 2011 | 2010 vs 2011 | |||
---|---|---|---|---|---|
Incidents | Rate | Incidents | Rate | Rate ratio | |
Duel type | |||||
Heading duel | 215 | 27.1 (23.5 to 30.8) | 177 | 22.3 (19.1 to 25.6) | 0.82 (0.68 to 1.00) |
Tackling duel | 437 | 55.2 (50.0 to 60.4) | 424 | 53.5 (48.4 to 58.6) | 0.97 (0.85 to 1.11) |
Other duel | 82 | 10.4 (8.1 to 12.6) | 86 | 10.9 (8.6 to 13.2) | 1.05 (0.78 to 1.42) |
Body location | |||||
Head/neck | 226 | 28.5 (24.8 to 32.3) | 184 | 23.2 (19.9 to 26.6) | 0.81 (0.67 to 0.99) |
Upper extremity | 16 | 2.0 (1.0 to 3.0) | 16 | 2.0 (1.0 to 3.0) | 1.00 (0.50 to 2.00) |
Trunk | 91 | 11.5 (9.1 to 13.9) | 108 | 13.6 (11.1 to 16.2) | 1.18 (0.90 to 1.57) |
Lower-extremity | |||||
Thigh | 39 | 4.9 (3.4 to 6.5) | 56 | 7.1 (5.2 to 8.9) | 1.44 (0.95 to 2.16) |
Knee | 49 | 6.2 (4.5 to 7.9) | 39 | 4.9 (3.4 to 6.5) | 0.80 (0.52 to 1.21) |
Lower leg/ankle | 313 | 39.5 (35.1 to 43.9) | 284 | 35.9 (31.7 to 40.0) | 0.91 (0.77 to 1.07) |
Incident rate is reported per 1000 player-match hours with 95% CI. Rate ratios between the 2010 and 2011 seasons are shown with 95% CI, with the 2010 season as the reference group.