Evidence map›Paper›PMID 31278734›Full record

ArticleJournal of medical Internet research2019

A Real-Time Early Warning System for Monitoring Inpatient Mortality Risk: Prospective Study Using Electronic Medical Record Data.

Chengyin Ye, Oliver Wang, Modi Liu, Le Zheng, Minjie Xia, Shiying Hao, Bo Jin, Hua Jin, Chunqing Zhu, Chao Jung Huang and 8 more

Abstract read
In one paragraph

Article in Journal of medical Internet research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 6 pooled it
–field-weighted citation impact
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

27 citing papers in PubMed, 6 syntheses or guidelines pooled it.

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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

18 authors.

Chengyin Ye *Department of Health Management, Hangzhou Normal University, Hangzhou, China.ORCID 0000-0001-8384-1857
Oliver Wang *HBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0001-6240-1342
Modi LiuHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0002-8066-3351
Le ZhengDepartment of Cardiothoracic Surgery, Stanford University, Stanford, CA, United States.ORCID 0000-0003-4744-367X
Minjie XiaHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0002-0367-1729
Shiying HaoDepartment of Cardiothoracic Surgery, Stanford University, Stanford, CA, United States.ORCID 0000-0002-7527-2460
Bo JinHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0001-9268-7134
Hua JinHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0002-3753-4044
Chunqing ZhuHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0003-0649-4403
Chao Jung HuangNational Taiwan University-Stanford Joint Program Office of AI in Biotechnology, Ministry of Science and Technology Joint Research Center for Artificial Intelligence Technology and All Vista Healthcare, Taipei, Taiwan.ORCID 0000-0002-4293-9492
Peng GaoShandong University of Traditional Chinese Medicine, Shandong, China.ORCID 0000-0003-4750-1008
Gray EllrodtDepartment of Medicine, Berkshire Medical Center, Pittsfield, MA, United States.ORCID 0000-0002-8301-4349
Denny BrennanMassachusetts Health Data Consortium, Waltham, CA, United States.ORCID 0000-0002-4974-759X
Frank StearnsHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0003-2049-9163
Karl G SylvesterDepartment of Surgery, Stanford University, Stanford, CA, United States.ORCID 0000-0002-8559-0155
Eric WidenHBI Solutions Inc, Palo Alto, CA, United States.ORCID 0000-0002-8999-4659
Doff B McElhinneyDepartment of Cardiothoracic Surgery, Stanford University, Stanford, CA, United States.ORCID 0000-0001-7242-0934
Xuefeng LingClinical and Translational Research Program, Betty Irene Moore Children's Heart Center, Lucile Packard Children's Hospital, Palo Alto, CA, United States.ORCID 0000-0002-5386-3884

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe rapid deterioration observed in the condition of some hospitalized patients can be attributed to either disease progression or imperfect triage and level of care assignment after their admission. An early warning system (EWS) to identify patients at high risk of subsequent intrahospital death can be an effective tool for ensuring patient safety and quality of care and reducing avoidable harm and costs.

objectiveThe aim of this study was to prospectively validate a real-time EWS designed to predict patients at high risk of inpatient mortality during their hospital episodes.

methodsData were collected from the system-wide electronic medical record (EMR) of two acute Berkshire Health System hospitals, comprising 54,246 inpatient admissions from January 1, 2015, to September 30, 2017, of which 2.30% (1248/54,246) resulted in intrahospital deaths. Multiple machine learning methods (linear and nonlinear) were explored and compared. The tree-based random forest method was selected to develop the predictive application for the intrahospital mortality assessment. After constructing the model, we prospectively validated the algorithms as a real-time inpatient EWS for mortality.

resultsThe EWS algorithm scored patients' daily and long-term risk of inpatient mortality probability after admission and stratified them into distinct risk groups. In the prospective validation, the EWS prospectively attained a c-statistic of 0.884, where 99 encounters were captured in the highest risk group, 69% (68/99) of whom died during the episodes. It accurately predicted the possibility of death for the top 13.3% (34/255) of the patients at least 40.8 hours before death. Important clinical utilization features, together with coded diagnoses, vital signs, and laboratory test results were recognized as impactful predictors in the final EWS.

conclusionsIn this study, we prospectively demonstrated the capability of the newly-designed EWS to monitor and alert clinicians about patients at high risk of in-hospital death in real time, thereby providing opportunities for timely interventions. This real-time EWS is able to assist clinical decision making and enable more actionable and effective individualized care for patients' better health outcomes in target medical facilities.

Indexed as

AlgorithmsComputer SystemsElectronic Health RecordsFemaleHumansInpatientsMachine LearningMaleMiddle AgedMonitoring, PhysiologicMortalityProspective StudiesRetrospective StudiesRisk AssessmentRisk Factorselectronic health recordsinpatientsmachine learningmortalityrisk assessment

Identifiers

PMID31278734
PMCPMC6640073

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LicenceCC BY
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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.