Abstract
Objective: To compare the ability of Paediatric Risk of Mortality (PRISM) and TRISS analysis in predicting mortality in the same cohort of paediatric trauma patients. Design: Retrospective review of patients' medical records. Setting: Multi-disciplinary paediatric intensive care unit at a tertiary care paediatric hospital. Patients: Children with multiple trauma admitted to the intensive care unit during the years 1987-91. Measurements: Patient records were reviewed for demographic data, mode of injuries and the systems injured. PRISM score was determined on the day of admission. TRISS was calculated from the Revised Trauma Score (RTS) and the Injury Severity Score (ISS). The predicted risk of mortality of each patient was calculated using both PRISM and TRISS methods. These predicting models were then compared using calibration curves, goodness of fit analysis, Z statistics and ROC curves. Main results: The 220 patients (age 7.6±4.4 years) studied had mean RTS of 6.1±1.7 and ISS of 20±19. There were 22 (...
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