Evaluation of the AIS as a measure of probability of death

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Ulman, M. S.¹; Stalnaker, R. L.²

Evaluation of the AIS as a measure of probability of death

Proceedings of the 1986 International IRCOBI Conference on the Biomechanics of Impact

Affiliations

¹Transportation Research Center of Ohio, East Liberty, Ohio 43319

²Department of Mechanical Engineering, The Ohio State University, Columbus, Ohio 43210
Abstract

The Abbreviated Injury Scale, or AIS, has become the chief system for evaluating the severities of injuries incurred in automobile accidents and in human tolerance studies. The Scale was first published in 1971 by the Joint Committee on Injury Scaling, and it was intended to replace and unite the wide variety of injury scales that existed at that time. To make the AIS as broad and useful as possible, it was based on five criteria: energy dissipation, threat to life, permanent impairment, treatment period, and incidence.

There are difficulties, however, in using the AIS to examine a single aspect of automobile injuries. For instance, AIS codes, and combinations of codes, can not be related directly to a probability of death. A single injury of AIS 3 to the head may be much more life threatening than an AIS 3 injury to a leg.

In this paper, AIS will be evaluated as a scale of probability of death. Data will be obtained from the National Accident Sampling System (NASS) to evaluate the correlation between the 3 most severe injuries in a case and the probability of death. A study will also be made to examine the dependency of probability of death on the the body regions in which injuries occurred.

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