Validation of trauma and injury severity score in blunt trauma patients by using a Canadian trauma registry.
To compare outcomes in blunt trauma by using Trauma and Injury Severity Score (TRISS) models derived from the Major Trauma Outcome Study (MTOS) and the Ontario Trauma Registry (OTR) as well as to evaluate the role of the Revised Trauma Score within the TRISS model.
Consecutive blunt trauma cases from 11 Level I trauma centers over a 4-year period were identified from the OTR.
Coefficients of the Revised Trauma Score were modified using the Ontario data and this score was tested by using the Hosmer-Lemeshow Goodness of Fit Test.
Two Ontario-specific TRISS models were developed with revised coefficients.
The first used the standard Revised Trauma Score and the second used the Revised Trauma Score with regenerated coefficients.
The accuracy of mortality predictions for all models were compared by using a Hosmer-Lemeshow Goodness of Fit procedure.
Additionally, each TRISS models performance characteristics and receiver operating characteristic (ROC) curves were used to evaluate their discriminative capabilities.
A total of 5,436 cases were incorporated in the analysis.
Patients with all component TRISS variables had a significantly lower mortality compared to all blunt trauma patients (7.0% vs. 15.5%, p<0.01).
Use of the Revised Trauma Score led to the exclusion of 40% of cases because of absent data necessary to compute the score.
The Hosmer-Lemeshow Goodness of Fit statistic for the Revised Trauma Score was 79.45 (p=0.0001).
Mots-clés Pascal : Traumatisme, Evaluation, Echelle évaluation, Indice gravité, Etude statistique, Homme, Canada, Amérique du Nord, Amérique
Mots-clés Pascal anglais : Trauma, Evaluation, Evaluation scale, Severity score, Statistical study, Human, Canada, North America, America
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0290040
Code Inist : 002B16N. Création : 199608.