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Table 2 Injury or disease severity scoring as originally described by the National Advisory Committee on Aeronautics (NACA)

From: Single mission workload and influencing factors in German prehospital emergency medicine - a nationwide prospective survey of 1361emergency missions

NACA 1 Injuries/diseases without any need for acute physician care
NACA 2 Injuries/diseases requiring examination and therapy by a physician, but hospital admission is not indicated
NACA 3 Injuries/diseases without an acute threat to life but requiring hospital admission
NACA 4 Injuries/diseases that can possibly lead to deterioration of vital signs
NACA 5 Injuries/diseases with an acute threat to life
NACA 6 Injuries/diseases transported after successful resuscitation of vital signs
NACA 7 Lethal injuries or diseases