Accuracy of Trauma Injury Severity Score (TRISS) in Khon Kaen Hospital

Jutitep  Charoenkwan; Tawatchai  Impool

Authors

Jutitep Charoenkwan Department of surgery, Khon Khan Hospital, Khon Khan, Thailand.
Tawatchai Impool Department of surgery, Khon Khan Hospital, Khon Khan, Thailand.

Keywords:

Trauma Injury Severity Score (TRISS), Revised Trauma Score (RTS), Injury Severity Score (ISS)

Abstract

Objective: To validate the accuracy of the Trauma Injury Severity Score (TRISS) in predicting the probability of survival (Ps) for trauma patients admitted to Khon Kaen Hospital, compared with actual in-hospital mortality.

Materials and Methods: This cross-sectional diagnostic study used trauma patient data from the Khon Kaen Trauma Registry, between January 2017 to December 2019. Ps was calculated using the national standard formula and compared to actual mortality. ROC curve analysis was used to determine the optimal Ps cut-off value based on sensitivity and specificity. Data were analyzed using SPSS v25.

Results: Data from 44,120 trauma patients were included. Most patients were male (71.1%) with a mean age of 39.6 years, and 86.8% sustained blunt trauma. The mean Revised Trauma Score (RTS) was 7.6, and the mean Injury Severity Score (ISS) was 7.8. A Ps cut-off of >95.0% yielded the highest accuracy (94.65%) for TRISS, with sensitivity and specificity of 79.0% and 93.9%, respectively.

Conclusion: The TRISS methodology accurately predicted survival for trauma patients at Khon Kaen Hospital, with improved accuracy achieved by adjusting the Ps cut-off value.

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