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Inj Prev. 2001 Mar;7(1):10-3.

An overview of the injury severity score and the new injury severity score.

Author information

1
Harvard Injury Control Research Center, Harvard School of Public Health, Boston, USA. mark@health.curtin.edu.au

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.

PMID:
11289527
PMCID:
PMC1730702
[Indexed for MEDLINE]
Free PMC Article

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