Concussion as a proportion of all injuries sustained where figures are reported for matches and training combined
| Author/year of publication | Number of players included in study | Total exposure | Number of injuries | Number of concussions | Concussion as a percentage of all injury |
|---|---|---|---|---|---|
| Collins et al (2008)50 | Not given | 32 014 player-matches and 81 627 player-practices | 594 | 94 | 15.8 |
| Durie and Munroe (2000)44 | 442 | 6880 player match-hours+23 868 player practice-hours | 270 | 6 | 2.2 |
| Junge et al (2004)45 | 123 | 1734 player match-hours+5141 player training-hours | 340 | 10 | 2.9 |
| Lewis and George (1996)41 | 45 | Not given | Not given | Not given | 7.1 |
| Marshall and Spencer (2001)51 | Not given | 1081 player-matches+3333 player- training sessions | 69 | 17 | 24.6 |
| Nathan, Goedeke and Noakes (1983)36 | Not given | 6075 player match-hours+25 110 player training-hours | 79 | 17 | 21.5 |
| Nicol et al (2010)49 | 470 | 2406 player match-hours; training exposure not given | 37 | 6 | 16.2 |
| Roux et al (1987)37 | Not given | 50 126 player match-hours+259 150 player training-hours | 495 | 59 | 12.0 |
| Sparks (1981)43 | Not given | Match+training total=500 000 player-hours | 9885 | 513 | 5.2 |
| Sparks (1985)42 | Not given | 22 776 player match-hours+17 090 player training-hours | 772 | 49 | 6.3 |
| Sugerman (1983)33 | Not given | Match+training total=45 885 player-games | 574 | 48 | 8.4 |
| Watson (1997)53 | 40 | Not given | 118 | 8 | 6.6 |