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NACA Classification

Grade Description
0 No injury or disease.
1 Mild injury or disease. No medical intervention required.
2 Mild to moderate injury or disease. Requires outpatient treatment, usually no emergency intervention needed.
3 Severe but not life-threatening injury or disease. Requires hospitalization and repeated local emergency treatment.
4 Severe injury or disease, life-threatening in the short term cannot be ruled out.
5 Acute life-threatening danger.
6 Respiratory and/or circulatory arrest and/or resuscitation.
7 Death.
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