Abbreviated Injury Scale (AIS)

Widely used for assessing injuries in motor vehicle accidents. Clearly not linear – Faigin [1976] shows average societal costs per fatality and injury in 1975 US$.

Average societal costs per fatality and injury in 1975 US$

AIS Code

 

1975 $US average cost

Index

 

Property Damage Only

520

 

Minor

 

2,190

1

Moderate

 

4,350

2

Severe

Not life threatening

8,085

4

Severe

Life threatening – survival probable

86,955

40

Critical

Survival uncertain

192,240

88

Maximum Severity

Currently untreatable

287,175

131

AIS may not be linear, but Injury Severity Score and Log Number of Patients seems to have a good linear relationship [Baker and O’Neill, 1976].

References

Baker S. P., and O'Neill B, 1976, The Injury severity score: an update, Journal of Trauma, 16(11, 882-885.

Faigin B M, 1976, 1975 Societal costs of motor vehicle accidents, US Department of Transportation, National Highway Traffic Safety Administration, Washington, 35p.

 

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