title: Calculation of the probability of survival for trauma patients based on trauma score and the injury severity score model in fatemi hospital in ardabil.
abstract: BACKGROUND
  Trauma, in addition to economic and social costs, is the fourth cause of death in the world and in the year 2000 alone, it led to the death of more than 6000000 people. In Iran, Trauma has the first burden of disease and also needs a long medical surveillance.
  
  
  OBJECTIVE
  The aim of this study was to evaluate the outcome of trauma cases using the trauma score and the injury severity score (TRISS) model and then comparing this with the results of a major trauma outcome study (MTOS) carried out in the US.
  
  
  METHODS
  This study is a retrospective, descriptive and analytical study on 1000 patients aged 2 - 82 years old with closed or penetrating traumas staying at Ardebil Fatemi hospital. In this study, injury severity score (ISS), revised trauma score (RTS), and TRISS were calculated and patients' viability ratios were obtained.
  
  
  RESULTS
  The results showed that 714 patients (71.4%) were male and 286 patients (28.6%) female with the mean age of 35.68 years. In this study 45 (4.5%) and 955 patients (95.5%) had penetrating and blunt traumas, respectively, whereby the head and neck were the most prevalent (74%) areas of injury. The most common reason for these traumas was, accident with vehicles with 670 cases (67%), which resulted in hospitalization. From this group, ninety-seven cases (9.7%) died in the hospital. From these results, calculations of ISS and RTS were 15.50 ± 11.31 and 7.49 ± 0.79, respectively. According to the calculation of the TRISS model, 91.5% of trauma victims should be survived, while only 90.3% survived practically.
  
  
  CONCLUSIONS
  We can conclude that the surveillance presented to our injured group probably had some defects that need to be revised in therapeutic services to enhance survival requirements.
authors.affiliation: Department of Anesthesia, Ardabil University of Medical Sciences, Ardabil, IR Iran.
authors.forename: Vadood
authors.initials: V
authors.lastname: Norouzi
authors.affiliation: Department of Surgery, Ardabil University of Medical Sciences, Ardabil, IR Iran.
authors.forename: Iraj
authors.initials: I
authors.lastname: Feizi
authors.affiliation: Department of Health Care Services Management, Tehran University of Medical Sciences, Tehran, IR Iran.
authors.forename: Soodabe
authors.initials: S
authors.lastname: Vatankhah
authors.affiliation: Department of Health Care Services Management, Tehran University of Medical Sciences, Tehran, IR Iran.
authors.forename: Majid
authors.initials: M
authors.lastname: Pourshaikhian
keywords: Mortality; Survival; Wounds and Injuries