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Table 1 Review of scoring systems validated

From: Validity of the CR-POSSUM model in surgery for colorectal cancer in Spain (CCR-CARESS study) and comparison with other models to predict operative mortality

Model Year of publication Country of development Population Number of model parameters Validation AUC [range] (Number of studies)
POSSUM 1991 United Kingdom General surgery 18 External [62.7–81.0] (10)
P-POSSUM 1996 United Kingdom General surgery 18 External [64.8–86.8] (13)
CR-POSSUM 2004 United Kingdom Colorectal surgery 10 External [59.0–89.8] (22)
AFC 2005 France Colorectal surgery for malignant or diverticular disease 4 External [71.4–89.0] (6)
IRCS 2014 Netherlands, Spain Colorectal surgery 5 External [83.0–85.0] (2)
  1. AUC Area under the curve