Table 2.
IRR, 95%CI, I2, and meta-regression p values for specific injury types.
| Sprain | Strain | Concussion | ACL injury | Ankle sprain | Achilles tendon injury | |
|---|---|---|---|---|---|---|
| Studies (n) | 10 | 9 | 10 | 3 | 2 | 2 |
| Meta-analysis | ||||||
| IRR | 0.90 | 0.88 | 1.23 | 2.15 | 1.00 | 1.07 |
| 95%CI | 0.78−1.05 | 0.65−1.18 | 0.84−1.81 | 1.27−3.62 | 0.71−1.39 | 0.46−2.50 |
| I2 (%) | 0 | 51.5 | 17.0 | 0 | 0 | 40.1 |
| Meta-regression (p) | ||||||
| Tournament vs. season | 0.487 | — | 0.375 | — | — | — |
| Injury definition | 0.952 | — | 0.226 | — | — | — |
| Age level | 0.844 | — | 0.531 | — | — | — |
| Quality score | 0.911 | — | 0.583 | — | — | — |
| Type of sport | — | — | — | — | ||
| F vs. B | 0.470 | 0.815 | ||||
| F vs. FH | 0.707 | 0.191 | ||||
| F vs. H | 0.730 | 0.573 | ||||
| F vs. R | 0.915 | |||||
Notes: An IRR below 1 indicates a higher injury incidence in males. No meta-regression was performed if fewer than 10 studies were available.
Abbreviations: 95%CI = 95% confidence interval; ACL = anterior cruciate ligament; B = basketball; F = football; FH = field hockey; H = handball; IRR = incidence rate ratio; R = rugby.