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Table 1 Distribution of AIS grades over the sample of 2,128 patients in [1]

From: The injury severity score: an operations perspective

AIS Grade Dead on arrival Dead later Survived Unknown Percentage
1 0 0 80 1 4%
2 0 2 437 1 20%
3 0 23 997 20 49%
4 0 30 229 3 13%
5 93 80 97 3 13%
Unknown 1 0 12 0 1%