An overview of the injury severity score and the new injury severity score
M Stevenson, M Segui-Gomez, I Lescohier, C Di Scala, G McDonald-Smith, M Stevenson, M Segui-Gomez, I Lescohier, C Di Scala, G McDonald-Smith
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.
References
- J Trauma. 1994 Sep;37(3):375-8
- Accid Anal Prev. 1993 Oct;25(5):521-8
- J Trauma. 1995 Feb;38(2):185-93
- J Trauma. 1995 Aug;39(2):320-4
- J Trauma. 1995 Nov;39(5):941-8
- J Trauma. 1996 Mar;40(3):412-6
- J Trauma. 1996 Jun;40(6):951-4; discussion 954-5
- Accid Anal Prev. 1996 Mar;28(2):163-70
- J Trauma. 1997 Dec;43(6):922-5; discussion 925-6
- J Trauma. 1998 Apr;44(4):580-2
- J Trauma. 1974 Mar;14(3):187-96
- J Trauma. 1976 Jul;16(7):517-23
- Health Serv Res. 1976 Summer;11(2):143-57
- Health Serv Res. 1979 Spring;14(1):68-76
- Am J Emerg Med. 1984 Nov;2(6):537-49
- J Pediatr Surg. 1989 Feb;24(2):156-8
- Ann Emerg Med. 1989 Oct;18(10):1053-8
- J Trauma. 1991 Apr;31(4):452-7; discussion 457-8
- J Trauma. 1991 Sep;31(9):1233-8; discussion 1238-9
- Arch Surg. 1992 Jan;127(1):111-7
- Am J Public Health. 1992 Mar;82(3):422-5
- J Trauma. 1992 Oct;33(4):602-9
- Am J Public Health. 1994 Oct;84(10):1605-8
Source: PubMed