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Journal Article

Citation

Stevenson MR, Segui-Gomez M, Lescohier I, Di Scala C, McDonald-Smith GP. Inj. Prev. 2001; 7(1): 10-13.

Affiliation

Harvard Injury Control Research Center, Harvard School of Public Health, Boston, USA. mark@health.curtin.edu.au

Copyright

(Copyright © 2001, BMJ Publishing Group)

DOI

unavailable

PMID

11289527

PMCID

PMC1730702

Abstract

OBJECTIVE: The research was undertaken to describe the injury severity score (ISS) and the new injury severity score (NISS) and to illustrate their statistical properties. DESIGN: Descriptive analysis and assessment of the distribution of these scales. METHODS: Three data sources--the National Pediatric Trauma Registry; the Massachusetts Uniform Hospital Discharge Data Set; and a trauma registry from an urban level I trauma center in Massachusetts--were used to describe the distribution of the ISS and NISS among injured patients. RESULTS: The ISS/NISS was found to have a positively skewed distribution and transformation did not improve their skewness. CONCLUSION: The findings suggest that for statistical or analytical purposes the ISS/ NISS should not be considered a continuous variable, particularly if ISS/NISS is treated as a continuous variable for correlation with an outcome measure.

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