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A new weighted injury severity scoring system: Better predictive power for pediatric trauma mortality

Junxin Shi1, Jiabin Shen, Sarah Caupp

  • 1From the Center for Pediatric Trauma Research (J.S., J.S., S.C., A.W., B.K., K.K.W., H.X.), Center for Injury Research and Policy (J.S., J.S., S.C., A.W., K.K.W., H.X.), The Research Institute at Nationwide Children's Hospital; Department of Emergency Medicine (K.E.N.), Nationwide Children's Hospital; Department of Pediatric Surgery, Nationwide Children's Hospital (B.K.); The Ohio State University College of Public Health, Division of Biostatistics (B.L.); and Department of Pediatrics, The Ohio State University College of Medicine (H.X.), Columbus, Ohio.

The Journal of Trauma and Acute Care Surgery
|May 23, 2018
PubMed

Insights

A new weighted Injury Severity Score (wISS) improves mortality prediction in pediatric blunt trauma patients compared to the traditional Injury Severity Score (ISS). This enhanced pediatric trauma scoring system offers better accuracy for outcome research.

Area of Science:

  • Pediatric Trauma Care
  • Injury Severity Scoring
  • Outcome Research

Background:

  • The traditional Injury Severity Score (ISS) lacks pediatric specificity and does not account for varying risks across different body regions.
  • Accurate injury severity measurement is crucial for evaluating pediatric trauma care and guiding research.

Purpose of the Study:

  • To develop a weighted Injury Severity Score (wISS) for pediatric blunt trauma patients.
  • To enhance predictive power for mortality compared to the traditional ISS.

Main Methods:

  • Weights were generated for Abbreviated Injury Scale (AIS) components based on mortality associations.
  • The wISS was developed using the National Trauma Data Bank and validated with the Nationwide Emergency Department Sample (NEDS).
  • Pediatric blunt trauma patients (<16 years) were analyzed, with mortality as the primary outcome.

Main Results:

  • The wISS demonstrated superior discrimination, with higher areas under the receiver operating characteristic curves (0.88 vs. 0.86 for ISS 1-74).
  • wISS showed improved specificity, positive predictive value, negative predictive value, and concordance at similar sensitivity levels.
  • The wISS exhibited better calibration and discrimination in validation datasets compared to the ISS.

Conclusions:

  • The weighted Injury Severity Score (wISS) offers significantly improved mortality prediction in pediatric blunt trauma.
  • The wISS is particularly effective for critically injured children, outperforming the traditional ISS.
Abstract

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