Table 1

The definition of each of the patient groups

Airlifted patientsPatients who were escorted to hospital by the HEMS physician in a helicopter
Ground escorted patientsPatients who were escorted to hospital by the HEMS physician in an ambulance
Assisted patientsPatients 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 missionsPatients 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 missionsPatients who were treated and escorted to hospital by the ground units as HEMS was cancelled prior to take off