Simplifying physiologic injury severity measurement for predicting trauma outcomes.
BACKGROUND: The Revised Trauma Score (RTS) is commonly used to assess physiologic injury; however its use is limited by missing data. This study compares different parameters of physiologic injury assessment in their ability to predict mortality after trauma.
METHODS: Adult patients in the National Trauma Data Bank (NTDB version 7.0) were analyzed, and the following physiologic injury parameters were compared: RTS, systolic blood pressure (SBP), shock (SBP
RESULTS: There were 1,484,648 patients who met inclusion criteria. In unadjusted analyses, RTS had the highest proportion of missing data (21%) and was highly predictive of mortality (AUROC = 0.85). SBP and shock had a much lower AUROC of 0.67 and 0.66, respectively, but had many fewer missing cases. The combination parameters of GCS-M with SBP or GCS-M with shock showed AUROC comparable to RTS (0.85) with approximately 80,000 fewer missing cases.
CONCLUSION: The discriminatory power of RTS is significantly better than SBP, shock, or GCS alone. Given the limitation of missing data associated with RTS, the combination of SBP and GCS-M is a more reliable and equally effective method of assessing physiologic injury severity in studying trauma outcomes.
The Journal of surgical research
Adult; Glasgow Coma Scale; Humans; Motor Activity; Patient Selection; Reproducibility of Results; Systole; Trauma Severity Indices; Traumatology; Treatment Outcome
Coma Scale; Trauma Score; Outcomes; Death; National Trauma Data Bank; NTDB
Oyetunji, T. A., Crompton, J. G., Efron, D. T., Haut, E. R., Chang, D. C., Cornwell, E. E., Baker, S. P., Haider, A. H. Simplifying physiologic injury severity measurement for predicting trauma outcomes. The Journal of surgical research 159, 627-632 (2010).