title: Evaluation of trauma and prediction of outcome using TRISS method.
abstract: BACKGROUND
  Trauma and injury severity score (TRISS), introduced in 1981 is a combination index based on revised trauma score (RTS), injury severity score (ISS) and patient's age. In this study we have used TRISS method to predict the outcome in trauma cases.
  
  
  METHODS
  1000 consecutive cases of trauma of adult age group admitted in casualty of Dayanand Medical College and Hospital Ludhiana, from 1/7/2000 onwards. Revised Trauma Score, Injury Severity Score and Age Index were recorded from which TRISS was determined. The performance of TS, ISS and TRISS as predictors of survival was evaluated using the misclassification rate, the information gain and the relative information gain.
  
  
  RESULTS
  The majority of the patients were men (83.7%) and in the age group of 20-50 years. Road traffic collisions (72%) were the most common cause of trauma. The mortality rate was 4.1%. Using PER method, the TRISS method was found to have information gain of 0.049 and a relative information gain of 0.41.
  
  
  CONCLUSIONS
  The revised trauma score (RTS) ranged from 2.746 to 7.8408.There was a graded increase in mortality with decreasing RTS score.
authors.affiliation: Department of General Surgery, Dayanand Medical College and Hospital, Ludhiana, Punjab, India.
authors.forename: Jaspal
authors.initials: J
authors.lastname: Singh
authors.forename: Gulzar
authors.initials: G
authors.lastname: Gupta
authors.forename: Ramneesh
authors.initials: R
authors.lastname: Garg
authors.forename: Ashish
authors.initials: A
authors.lastname: Gupta
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