Evidence map›Paper›PMID 34818691›Full record

ArticleInternational wound journal2022

The amputation and mortality of inpatients with diabetic foot ulceration in the COVID-19 pandemic and postpandemic era: A machine learning study.

Chenzhen Du, Yuyao Li, Puguang Xie, Xi Zhang, Bo Deng, Guixue Wang, Youqiang Hu, Min Wang, Wu Deng, David G Armstrong and 2 more

Open access · goldAbstract read
In one paragraph

Article in International wound journal, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 3 pooled it
5.0field-weighted citation impact, top 4% 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

24 citing papers in PubMed, 3 syntheses or guidelines pooled it, 43 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

12 authors at 3 institutions in 3 countries.

Chenzhen DuDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Yuyao LiDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Puguang XieDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Xi ZhangDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Bo DengDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Guixue WangBioengineering College, Key Laboratory for Biorheological Science and Technology of Ministry of Education, Chongqing University, Chongqing, China.
Youqiang HuBioengineering College, Key Laboratory for Biorheological Science and Technology of Ministry of Education, Chongqing University, Chongqing, China.
Min WangDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Wu DengCollege of Electronic Information and Automation, Civil Aviation University of China, Tianjin, China.
David G ArmstrongDepartment of Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, California, USA.
Yu MaDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Wuquan DengDepartment of Endocrinology, School of Medicine, Bioengineering College, Chongqing Emergency Medical Center, Chongqing University Central Hospital, Chongqing University, Chongqing, China.
Chongqing University · CNCivil Aviation University of China · CNUniversity of Southern California · US

Funding

Improving the science of adherence reinforcement and safe mobility in people with diabetic foot ulcers using smart offloadingR01DK124789 · NIDDK · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ARMSTRONG, DAVID GEORGE, NAJAFI, BIJAN · 2021 to 2025
$2.0M
NIDDK NIH HHS R01 DK124789
6 · The paper itself

Abstract

This study aimed to explore the clinical characteristic and outcomes of inpatients with diabetic foot ulceration (DFU) in 2019 (prelockdown) and 2020 (postlockdown) due to the COVID-19 pandemic, at an emergency medical service unit. Prediction models for mortality and amputation were developed to describe the risk factors using a machine learning-based approach. Hospitalized DFU patients (N = 23) were recruited after the lockdown in 2020 and matched with corresponding inpatients (N = 23) before lockdown in 2019. Six widely used machine learning models were built and internally validated using 3-fold cross-validation to predict the risk of amputation and death in DFU inpatients under the COVID-19 pandemic. Previous DF ulcers, prehospital delay, and mortality were significantly higher in 2020 compared to 2019. Diabetic foot patients in 2020 had higher hs-CRP levels (P = .037) but lower hemoglobin levels (P = .017). The extreme gradient boosting (XGBoost) performed best in all models for predicting amputation and mortality with the highest area under the curve (0.86 and 0.94), accuracy (0.80 and 0.90), sensitivity (0.67 and 1.00), and negative predictive value (0.86 and 1.00). A long delay in admission and a higher risk of mortality was observed in patients with DFU who attended the emergency center during the COVID-19 post lockdown. The XGBoost model can provide evidence-based risk information for patients with DFU regarding their amputation and mortality. The prediction models would benefit DFU patients during the COVID-19 pandemic.

Indexed as

COVID-19Diabetes MellitusDiabetic FootFoot UlcerAmputation, SurgicalCommunicable Disease ControlC-Reactive ProteinHemoglobinsHumansInpatientsMachine LearningPandemicsUlcerC-Reactive ProteinHemoglobinsamputationCOVID-19 pandemicdiabetic foot ulcerationmachine learningmortality

Identifiers

PMID34818691
PMCPMC9493239
OpenAlexW3215903761

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.