Table 1.

The National Advisory Committee on Aeronautics (NACA) scale.

Score level	Patient status
NACA 0	No injury or illness
NACA 1	Not acute life-threatening disease or injury
NACA 2	Acute intervention not necessary, further diagnostic studies needed
NACA 3	Severe, but not life-threatening disease or injury; acute intervention necessary
NACA 4	Development of vital (life-threatening) danger possible
NACA 5	Acute vital (life-threatening) danger
NACA 6	Acute cardiac or respiratory arrest
NACA 7	Death