title: Comparison of APACHE II and three abbreviated APACHE II scores for predicting outcome among emergency trauma patients.
abstract: OBJECTIVE
  to compare the ability of the APACHE II score and three different abbreviated APACHE II scores: simplified APACHE II (s-APACHE II), Rapid Acute Physiology score (RAPS) and Rapid Emergency Medicine score to evaluate in-hospital mortality of trauma patients at the emergency department (ED).
  
  
  METHODS
  retrospective analysis of a prospective cohort study. All patients' victims of trauma admitted to the ED, during a 5 months period. For all entries to the ED, APACHE II score was calculated. APACHE II system was abbreviated by excluding the laboratory data to calculate s-APACHE II score for each patient. Individual data were reanalyzed to calculate RAPS and REMS. APACHE II score and its subcomponents were collected, and in-hospital mortality was assessed. The area under the receiver operating characteristic (AUROC) curve was used to determine the predictive value of each score.
  
  
  RESULTS
  163 patients were analyzed. In-hospital mortality rate was 10.4%. s-APACHE II, RAPS and REMS scores were correlated with APACHE II score (r2= 0.96, r2= 0.82, r2= 0.92; p < 0.0001). Scores had similar accuracy in predicting mortality ([AUROC 0.777 [95% CI 0.705 to 0.838] for APACHE II, AUROC 0.788 [95% CI 0.717 to 0.848] for s-APACHE II, AUROC 0.806 [95% CI 0.737 to 0.864] for RAPS, AUROC 0.761 [95% CI 0.688 to 0.824] for REMS.
  
  
  CONCLUSIONS
  abbreviated APACHE II scores have similar ability to evaluate in-hospital mortality of emergency trauma patients in comparison to APACHE II score.
authors.affiliation: São Vicente de Paulo Hospital, University of Passo Fundo, Passo Fundo, RS, Brazil.
authors.forename: Jorge Roberto
authors.initials: JR
authors.lastname: Polita
authors.affiliation: São Vicente de Paulo Hospital, University of Passo Fundo, Passo Fundo, RS, Brazil.
authors.forename: Jussara
authors.initials: J
authors.lastname: Gomez
authors.affiliation: Graduate Program in Pulmonology, Medical School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Gilberto
authors.initials: G
authors.lastname: Friedman
authors.affiliation: Medical School, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Sérgio Pinto
authors.initials: SP
authors.lastname: Ribeiro
mesh_terms: D018806:APACHE; D001938:Brazil / Q000453:epidemiology; D015331:Cohort Studies; D005260:Female; D017052:Hospital Mortality; D006801:Humans; D007362:Intensive Care Units; D008297:Male; D011237:Predictive Value of Tests; D012372:ROC Curve; D012189:Retrospective Studies; D015599:Trauma Severity Indices; D014947:Wounds and Injuries / Q000145:classification / Q000401:mortality*