A model predicting operative mortality in the UK has only limited value in Denmark

Purpose Postoperative mortality from colorectal cancer varies between surgical departments. Several models have been developed to predict the operative risk. This study aims to investigate whether the original and the revised Association of Coloproctology of Great Britain and Ireland (ACPGBI) model...

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Bibliographic Details
Published in:International journal of colorectal disease 2018-02, Vol.33 (2), p.141-147
Main Authors: Degett, Thea Helene, Roikjær, Ole, Iversen, Lene Hjerrild, Gögenur, Ismail
Format: Article
Language:English
Subjects:
Analysis
Cancer surgery
Colorectal cancer
Colorectal carcinoma
Gastroenterology
Health aspects
Hepatology
Internal Medicine
Laparoscopy
Medical research
Medicine
Medicine & Public Health
Medicine, Experimental
Mortality
Original Article
Proctology
Prognosis
Risk groups
Surgery
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Summary:Purpose Postoperative mortality from colorectal cancer varies between surgical departments. Several models have been developed to predict the operative risk. This study aims to investigate whether the original and the revised Association of Coloproctology of Great Britain and Ireland (ACPGBI) model can predict 30-day mortality after colorectal cancer surgery in Denmark. Methods Data were collected from the Danish Colorectal Cancer Group database which has > 95% completeness. All patients operated on from January 2007 to December 2013 were included. The individual estimated operative risk was calculated with the original and revised ACPGBI models. Discrimination and calibration were evaluated with a Receiver Operating Characteristic (ROC) curve analysis and a Hosmer-Lemeshow test, respectively. Results In total, 22,807 patients underwent open or laparoscopic colorectal cancer surgery. After excluding 1437 patients because of missing data, 21,370 patients were left for the analyses. The observed 30-day mortality was 5.0%. The original and revised ACPGBI models estimated an operative risk of 7.0 and 4.0%, respectively, with a significant difference in observed and estimated mortality in both models. However, in patients with an estimated risk of at least 26%, i.e., high-risk, good calibration was found with the original ACPGBI model. Discrimination was good with an AUC of 0.83 (95% CI 0.82–0.84) in both models. Conclusion The original and revised ACPGBI models are not suitable prediction models for postoperative mortality in the Danish colorectal cancer population. However, the original model might be applicable in predicting mortality in high-risk patients.
ISSN:0179-1958
1432-1262
DOI:10.1007/s00384-017-2937-y