Evidence map›Paper›PMID 27995423›Full record

ArticleTechniques in coloproctology2017

A simple web-based risk calculator (www.anastomoticleak.com) is superior to the surgeon's estimate of anastomotic leak after colon cancer resection.

T Sammour, M Lewis, M L Thomas, M J Lawrence, A Hunter, J W Moore

Abstract readComparative StudyValidation Study
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In one paragraph

Article in Techniques in coloproctology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 3 pooled it
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Management of anastomotic leak after elective anterior resection for rectal cancer: A systematic review and pooled analysis.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2025
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  12. Differential Performance of Machine Learning Models in Prediction of Procedure-Specific Outcomes.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2022
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  14. Risk Nomogram Does Not Predict Anastomotic Leakage After Colon Surgery Accurately: Results of the Multi-center LekCheck Study.Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2022
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  15. Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic.Colorectal disease : the official journal of the Association of Coloproctology of Great Britain and Ireland · 2020
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  16. Development of a Risk Score to Predict Anastomotic Leak After Left-Sided Colectomy: Which Patients Warrant Diversion?Journal of gastrointestinal surgery : official journal of the Society for Surgery of the Alimentary Tract · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

T SammourColorectal Unit, Department of Surgery, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia. tarik.sammour@gmail.com.
M LewisColorectal Unit, Department of Surgery, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.
M L ThomasColorectal Unit, Department of Surgery, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.
M J LawrenceColorectal Unit, Department of Surgery, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.
A HunterColorectal Unit, Department of Surgery, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.
J W MooreColorectal Unit, Department of Surgery, Royal Adelaide Hospital, North Terrace, Adelaide, SA, 5000, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnastomotic leak can be a devastating complication, and early prediction is difficult. The aim of this study is to prospectively validate a simple anastomotic leak risk calculator and compare its predictive value with the estimate of the primary operating surgeon.

methodsConsecutive patients undergoing elective or emergency colon cancer surgery with a primary anastomosis over a 1-year period were prospectively included. A recently published anastomotic leak risk nomogram was converted to an online calculator ( www.anastomoticleak.com ). The calculator-derived risk of anastomotic leak and the risk estimated by the primary operating surgeon were recorded at the completion of surgery. The primary outcome was anastomotic leak within 90 days as defined by previously published criteria. Area under receiver operating characteristic curve analysis (AUROC) was performed for both risk estimates.

resultsA total of 105 patients were screened for inclusion during the study period, of whom 83 met the inclusion criteria. The overall anastomotic leak rate was 9.6%. The anastomotic leak calculator was highly predictive of anastomotic leak (AUROC 0.84, P = 0.002), whereas the surgeon estimate was not predictive (AUROC 0.40, P = 0.243).

conclusionsA simple anastomotic leak risk calculator is significantly better at predicting anastomotic leak than the estimate of the primary surgeon. Further external validation on a larger data set is required.

Indexed as

Colorectal SurgeryInternetAdultAgedAged, 80 and overAnastomotic LeakArea Under CurveColonic NeoplasmsFemaleHumansMaleMiddle AgedPredictive Value of TestsProspective StudiesRisk AssessmentRisk FactorsAnastomotic leakColon cancerRisk calculator

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.