Time from injury to death (survival time) among fatally injured pedestrians.

This study examines the survival time after injury and its relationship to age and Injury Severity Score (ISS) among 322 fatally injured pedestrians. Long survival times were associated with older age and with lower ISS. The association of long survival time with older ages remained present after adjustment for ISS. People with untreatable severe injuries (as defined by the Abbreviated Injury Scale) and people who died of potentially survivable injuries had markedly different survival times. Therefore, in analyses of data relating to survival time, combining the two groups should be avoided.