The definition of each of the patient groups
| Airlifted patients | Patients who were escorted to hospital by the HEMS physician in a helicopter |
| Ground escorted patients | Patients who were escorted to hospital by the HEMS physician in an ambulance |
| Assisted patients | Patients who were assisted on scene by HEMS, but left to be handled by the ground units instead of being escorted to hospital by HEMS |
| Aborted missions | Patients who were treated and escorted to hospital by the ground units as HEMS was cancelled en route before arrival at the patient’s side |
| Rejected missions | Patients who were treated and escorted to hospital by the ground units as HEMS was cancelled prior to take off |