title: Evaluation of CR-POSSUM, original ACPGBI and new ACPGBI scoring systems for colorectal cancer surgery.
abstract: OBJECTIVE
  To compare the Colorectal Physiological and Operative Score for enUmeration of Mortality and Morbidity (Cr-POSSUM) with the original Association of Coloproctology of Great Britain and Ireland (ACPGBI) and new ACPGBI scoring systems for their ability to predict mortality after colorectal cancer surgery.
  
  
  METHODS
  We retrospectively calculated the Cr-POSSUM,original ACPBGI and new ACPGBI scores of 105 patients who underwent colorectal cancer surgery. Data were obtained from patients' medical records and operative notes.Mortality was defined as death within 30 days of surgery.Scores were validated by assessing their calibration and discrimination. Calibration was assessed using the Hosmer-Leme show test and corresponding calibration curves. The discriminative capability of the models was evaluated using receiver operating characteristic (ROC) curve analysis.
  
  
  RESULTS
  The observed mortality rate was 4.8 %. The over all estimated risks of death of the Cr-POSSUM, original ACPGBI, and new ACPGBI scores were 9.92%, 7.35% and 4.20%, respectively. The results of areas under the curve(AUC) for Cr-POSSUM, original ACPGBI and new ACPGBI scores were 0.792, 0.844 and 0.801 respectively.
  
  
  CONCLUSIONS
  The Cr-POSSUM, original ACPGBI and new ACPGBI scoring syStems are accurate in determining mortality rates and for predicting the risks of death in individual patients. The new and original ACPGBI scoring systems performed slightly better than the Cr-POSSUM scoring system.
authors.forename: Of
authors.initials: O
authors.lastname: Ozkan
authors.forename: A
authors.initials: A
authors.lastname: Guner
authors.forename: U
authors.initials: U
authors.lastname: Kaya
authors.forename: C
authors.initials: C
authors.lastname: Kece
authors.forename: E
authors.initials: E
authors.lastname: Reis
authors.forename: S
authors.initials: S
authors.lastname: Kesici
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003082:Colectomy / Q000401:mortality; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000401:mortality* / Q000601:surgery*; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D012372:ROC Curve; D015203:Reproducibility of Results; D012189:Retrospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012680:Sensitivity and Specificity; D015996:Survival Rate; D016896:Treatment Outcome; D014421:Turkey / Q000453:epidemiology