Definitions for Concussion descriptors
| Operational variable | Definitions |
|---|---|
| Speed at which player is moving prior to injurious event19 20 | |
| Stationary | No visible foot movement |
| Slow | Walking |
| Moderate | Jogging (non-purposeful slow running with low knee lift) |
| Fast | Running/sprinting (purposeful running with maximal effort, high knee lift |
| Speed at which other involved player(s) are moving prior to injurious event19 20 | |
| Stationary | No visible foot movement |
| Slow | Walking |
| Moderate | Jogging (non-purposeful slow running with low knee lift) |
| Fast | Running/sprinting (purposeful running with maximal effort, high knee lift |
| Protective gear: concussed player12 | |
| Scrum cap | Concussed player was wearing a scrum cap |
| Mouthguard | Concussed player was wearing a mouthguard |
| Both | Concussed player was wearing both a scrum cap and a mouthguard |
| None | Player was wearing neither a scrum cap nor a mouthguard |
| Anticipated hit—whether the player was aware of impending contact situation12 | |
| Yes | Concussed player was aware of/attuned to impending contact |
| No | Concussed player was unaware of/oblivious to impending contact |
| On-field medical attention12 | |
| Yes | Player received immediate on-field medical attention |
| No | Player did not receive immediate on-field medical attention |
| Game status | |
| First day/stage game | Game is a qualifier taking place on a day other than the final day |
| Final day game | Game is on the final day of the tournament |
| Score at time of injury—from perspective of concussed player's team | |
| Winning | Concussed player's team is winning the game |
| Losing | Concussed player's team is losing the game |
| Tied game | The game is tied at the time of injury |
| Time played in current game, minute12 | |
| 0–20 | Player has been on the field playing for between 0 and 20 min |
| 20–40 | Player has been on the field playing for between 20 and 40 min |
| 40–60 | Player has been on the field playing for between 40 and 60 min |
| 60–80 | Player has been on the field playing for between 60 and 80 min |