Post-tackle—types of injuries sustained by BC, T1 and T2 as a function of the player’s BRS during the tackle
| Risk factor in tackle | No of events involving midfi eld backs | RR (95% CI), p value | |
|---|---|---|---|
| General play | Midfield back injuries | ||
| BC | |||
| Player | |||
| Back | 959 | 23 | 1.03 (0.68 to 1.56), 0.889 |
| Forward | 415 | 9 | 0.93 (0.48 to 1.80), 0.834 |
| Speed into tackle | |||
| Fast | 383 | 18 | 1.94 (1.21 to 3.12), 0.006* |
| Slow/stationary | 1023 | 16 | 0.65 (0.39 to 1.06), 0.084 |
| BRS in tackle | |||
| Head/neck | 40 | 1 | 1.05 (0.14 to 7.61), 0.968 |
| Upper limb | 533 | 8 | 0.63 (0.31 to 1.26), 0.190 |
| Trunk | 525 | 8 | 0.64 (0.32 to 1.28), 0.208 |
| Lower limb | 283 | 16 | 2.37 (1.43 to 3.92), <0.001* |
| Midfield back (T1) | |||
| Speed into tackle | |||
| Fast | 183 | 8 | 1.81 (0.89 to 3.66), 0.101 |
| Slow/stationary | 1221 | 26 | 0.88 (0.60 to 1.30), 0.516 |
| Impact on BC | |||
| High | 296 | 14 | 2.02 (1.18 to 3.45), 0.010* |
| Low | 1112 | 19 | 0.73 (0.46 to 1.15), 0.171 |
| Direction on BC | |||
| Behind | 160 | 6 | 1.55 (0.69 to 3.50), 0.294 |
| Front | 542 | 13 | 0.99 (0.57 to 1.72), 0.976 |
| Side | 703 | 15 | 0.88 (0.53 to 1.47), 0.631 |
| Tackle type | |||
| Arm | 730 | 15 | 0.90 (0.54 to 1.49), 0.674 |
| Collision | 80 | 0 | 0.00 (−), − |
| Jersey | 36 | 1 | 1.21 (0.17 to 8.83), 0.849 |
| Lift | 8 | 0 | 0.00 (−), − |
| Shoulder | 395 | 16 | 1.77 (1.07 to 2.91), 0.026 |
| Smother | 143 | 0 | 0.00 (−), − |
| Tap | 3 | 0 | 0.00 (−), − |
| BRS in tackle | |||
| Head/neck | 13 | 6 | 19.61 (7.45 to 51.59), <0.001* |
| Upper limb | 1290 | 27 | 0.89 (0.61 to 1.30), 0.549 |
| Trunk | 80 | 0 | 0.00 (−), − |
| Lower limb | 19 | 0 | 0.00 (−), − |
↵* Statistically signifi cant difference (<0.01).
BC, ball carrier; BRS, body region struck; T1, Tackler-1.