Gross fall descriptors
| Descriptor | Definition |
| Type of inciting event | Horse fall: horse’s shoulder and quarters contact the ground or the obstacle and the ground |
| Jockey fall/unseated: jockey’s involuntary dismount from his/her horse | |
| Speed of inciting event | Stationary: no visible movement |
| Slow: walking | |
| Moderate: trot or canter | |
| Fast: gallop | |
| Interaction between jockey and horse(s) | Horse fall no subsequent contact with jockey |
| Horse fall—jockey contacted/trampled by own horse | |
| Horse fall—jockey contacted/trampled by other horse | |
| Horse fall—jockey contacted/trampled by own and other horse(s) | |
| No horse fall—jockey unseated no subsequent contact sustained | |
| No horse fall—jockey contacted/trampled by own horse | |
| No horse fall—jockey contacted/trampled by other horse(s) | |
| No horse fall—jockey contacted/trampled by own and other horse(s) | |
| Number of horse fallers | Number of horses that fell during the same inciting event (count) |
| Number of jockey fallers | Number of jockeys that were unseated/fell during the same inciting event (count) |
| Jockey contact with reins (during inciting event) | Let go prior to landing: jockey released reins prior to landing/sustaining first impact |
| Hung on to rein(s): jockey maintained contact with reins during fall and upon sustaining first impact | |
| Hung on to rein(s): jockey maintained contact with reins during landing/upon sustaining first impact and was dragged by horse | |
| Not visible | |
| Jockey contact with stirrups (during inciting event) | Feet out before landing: jockey’s feet were released from the stirrup irons prior to landing/sustaining first impact |
| One/both feet in irons upon landing: one/both feet remained in the stirrup irons throughout fall and during landing/sustaining first impact | |
| One/both feet in irons upon landing: one/both feet remained in the stirrup irons throughout fall and during landing/sustaining first impact and was dragged by horse | |
| Not visible | |
| Gross outline body position (pre-impact): jockey’s body position prior to sustaining first impact | Extended: trunk and extremities extended |
| Semitucked: partial flexion at trunk and/or extremities | |
| Tucked: both trunk and extremities flexed | |
| Gross outline body position (during impact): jockey’s body position upon sustaining first impact | Extended: trunk and extremities extended |
| Semitucked: partial flexion at trunk and/or extremities | |
| Tucked: both trunk and extremities flexed | |
| Landing deceleration: did the jockey come to an immediate stop upon impact? | Yes: jockey came to immediate stop upon impact |
| No: jockey did not come to an immediate stop upon impact | |
| Not visible/inconclusive: unable to definitively identify if jockey came to an immediate stop upon impact |