Evidence map›Paper›PMID 34295545›Full record

ArticleJournal of gastrointestinal oncology2021

Machine learning-based random forest predicts anastomotic leakage after anterior resection for rectal cancer.

Rongbo Wen, Kuo Zheng, Qihang Zhang, Leqi Zhou, Qizhi Liu, Guanyu Yu, Xianhua Gao, Liqiang Hao, Zheng Lou, Wei Zhang

Open access · diamondAbstract read
In one paragraph

Article in Journal of gastrointestinal oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
2.3field-weighted citation impact, top 9% of its field
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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 34 citations in OpenAlex.

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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

10 authors at 3 institutions in 2 countries.

Rongbo WenDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Kuo ZhengDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Qihang ZhangSchool of Industrial and Systems Engineering, Georgia Institute of Technology, Atlanta, Georgia, USA.
Leqi ZhouDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Qizhi LiuDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Guanyu YuDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Xianhua GaoDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Liqiang HaoDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Zheng LouDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Wei ZhangDepartment of Colorectal Surgery, Changhai Hospital, Shanghai, China.
Second Military Medical University · CNChanghai Hospital · CNGeorgia Institute of Technology · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAnastomotic leakage (AL) is one of the commonest and most serious complications after rectal cancer surgery. The previous analyses on predictors for AL included small-scale patients, and their prediction models performed unsatisfactorily.

methodsClinical data of 5,220 patients who underwent anterior resection for rectal cancer were scrutinized to create a prediction model via random forest classifier. Additionally, data of 836 patients served as the test dataset. Patients diagnosed with AL within 6 months' follow-up were recorded. A total of 20 candidate factors were included. Receiver operating characteristic (ROC) curve was conducted to determine the clinical efficacy of our model, and compare the predictive performance of different models.

resultsThe incidence of AL was 6.2% (326/5,220). A multivariate logistic regression analysis and the random forest classifier indicated that sex, distance of tumor from the anal verge, bowel stenosis or obstruction, preoperative hemoglobin, surgeon volume, diabetes, neoadjuvant chemoradiotherapy, and surgical approach were significantly associated with AL. After propensity score matching, the temporary stoma was not identified as a protective factor for AL (P=0.58). Contrastingly, the first year of performing laparoscopic surgery was a predictor (P=0.009). We created a predictive random forest classifier based on the above predictors that demonstrated satisfactory prediction efficacy. The area under the curve (AUC) showed that the random forest had higher efficiency (AUC =0.87) than the nomogram (AUC =0.724).

conclusionsOur findings suggest that eight factors may affect the incidence of AL. Our random forest classifier is an innovative and practical model to effectively predict AL, and could provide rational advice on whether to perform a temporary stoma, which might reduce the rate of stoma and avoid the ensuing complications.

Indexed as

Anastomotic leakage (AL)machine learningnomogramrandom forestrectal cancerrisk factor

Identifiers

PMID34295545
PMCPMC8261311
OpenAlexW3210798463

What OpenQuestion holds

Textmetadata
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Registered trials

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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.