The TRISS method applied to the victims of traffic accidents attended at a tertiary level emergency hospital in a developing country.

In Brazil, trauma occupies third place among the various causes of death and is the first cause of death among young people. Among the various approaches to the study of trauma, analysis of the organisation and quality of care has been frequently reported in the literature. The objective of the present study was to assess the quality of care for victims of trauma due to traffic accidents provided at the Emergency Unit of the University Hospital, Faculty of Medicine of Ribeirão Preto, SP, Brazil. The quality of care was compared between two different periods, i.e., before and after the introduction of modifications in prehospital care, and was also compared to the North American standards of the Major Trauma Outcome Study (MTOS). The Trauma Score and Injury Severity Score (TRISS) was used to calculate the probability of survival and the Z statistic was used for comparison with the MTOS. During both periods studied, the results were inferior to those obtained by the MTOS, although positive signs were detected at the Emergency Unit regarding the organisation of the system of trauma care during the study period.