Yonsei Med J.  2022 Jan;63(1):88-94. 10.3349/ymj.2022.63.1.88.

Predicting Mortality of Korean Geriatric Trauma Patients: A Comparison between Geriatric Trauma Outcome Score and Trauma and Injury Severity Score

Affiliations
  • 1Department of Trauma Surgery, Ajou University School of Medicine, Suwon, Korea
  • 2Department of Preventive Medicine & Public Health, Ajou University School of Medicine, Suwon, Korea

Abstract

Purpose
The Geriatric Trauma Outcome Score (GTOS) is a new prognostic tool used to predict mortality of geriatric trauma patients. We aimed to apply this model to Korean geriatric trauma patients and compare it with the Trauma and Injury Severity Score (TRISS) method.
Materials and Methods
Patients aged ≥65 years who were admitted to a level 1 trauma center from 2014 to 2018 were included in this study. Data on age, Injury Severity Score (ISS), packed red blood cell transfusion within 24 h, TRISS, admission disposition, mortality, and discharge disposition were collected. We analyzed the validity of GTOS and TRISS by comparing the area under the survival curve. Subgroup analysis for age, admission disposition, and ISS was performed.
Results
Among 2586 participants, the median age was 75 years (interquartile range: 70–81). The median ISS was 9 (interquartile range: 4–12), with a transfusion rate (within 24 h) of 15.9% and mortality rate of 6.1%. The areas under the curve (AUCs) were 0.832 [95% confidence interval (CI), 0.817–0.846] and 0.800 (95% CI, 0.784–0.815) for GTOS and TRISS, respectively. On subgroup analysis, patients with ISS ≥9 showed a higher AUC of GTOS compared to the AUC of TRISS (p<0.05). Other subgroup analyses showed equally good power of discrimination for mortality.
Conclusion
GTOS can be used to predict mortality of severely injured Korean geriatric patients, and also be helpful in deciding whether invasive or aggressive treatments should be administered to them.

Keyword

Geriatric Trauma Outcome Score; trauma; Trauma and Injury Severity Score; prognosis score
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