Sport-related concussion onset characteristics
| Variables | n (%) |
| Session | |
| Competition | 103 (79.2) |
| Practice | 27 (20.8) |
| Position | |
| Mid-field | 49 (37.7) |
| Defence | 37 (28.5) |
| Forward | 25 (19.2) |
| Goalie | 19 (14.6) |
| Mechanism | |
| Contact with player (other than slide tackle) | 72 (55.4) |
| Contact with ball | 46 (35.4) |
| Stepped/fell on or kicked | 6 (4.6) |
| Slide tackle | 4 (3.3) |
| Other | 2 (1.6) |
| Activity | |
| Defending | 34 (26.2) |
| Chasing loose ball | 17 (13.1) |
| Goal tending | 17 (13.1) |
| Heading ball with contact | 13 (10.0) |
| Blocking shot or pass | 12 (9.2) |
| General play | 10 (7.7) |
| Heading ball without contact | 8 (6.2) |
| Ball handling—dribbling | 7 (5.4) |
| Other | 15 (12.1) |
| Head contact with | |
| Other player | 53 (40.7) |
| Head | 18 (13.8) |
| Upper extremity | 22 (16.9) |
| Lower extremity | 13 (10.0) |
| Ball | 46 (35.4) |
| Surface | 27 (20.8) |
| Other | 4 (3.0) |
| Head location of blow | |
| Side | 41 (31.5) |
| Back | 29 (22.3) |
| Front | 29 (22.3) |
| Face | 23 (17.7) |
| Top | 8 (6.2) |
| Player see the blow coming? | |
| No | 73 (56.2) |
| Yes | 46 (35.4) |
| Unknown | 11 (8.5) |
| Foul called on play (competition only) | |
| No | 80 (77.7) |
| Yes | 11 (10.7) |
| Unknown | 5 (4.9) |
| Not available | 7 (6.8) |