Evidence map›Paper›PMID 31888609›Full record

ArticleBMC medical informatics and decision making2019

Use of natural language processing to improve predictive models for imaging utilization in children presenting to the emergency department.

Xingyu Zhang, M Fernanda Bellolio, Pau Medrano-Gracia, Konrad Werys, Sheng Yang, Prashant Mahajan

Abstract read
In one paragraph

Article in BMC medical informatics and decision making, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 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

14 citing papers in PubMed, 1 synthesis or guideline 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

6 authors.

Xingyu ZhangDepartment of Systems, Populations and Leadership, University of Michigan School of Nursing, Ann Arbor, USA. zhangxyu@umich.edu.ORCID 0000-0001-8108-1997
M Fernanda BellolioDepartment of Emergency Medicine, Mayo Clinic, Rochester, USA.
Pau Medrano-GraciaDepartment of Anatomy and Medical Imaging, University of Auckland, Auckland, New Zealand.
Konrad WerysOxford Centre for Clinical Magnetic Resonance Research, University of Oxford, Oxford, UK.
Sheng YangDepartment of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China. yangsheng@njmu.edu.cn.
Prashant MahajanDepartment of Emergency Medicine, University of Michigan School of Medicine, Ann Arbor, USA.

Funding

Michigan Institute for Clinical and Health Research (MICHR)UL1TR002240 · NCATS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LUMENG, JULIE C, MASHOUR, GEORGE ALEXANDER · 2017 to 2022
$54.9M
NCATS NIH HHS UL1 TR002240
6 · The paper itself

Abstract

objectiveTo examine the association between the medical imaging utilization and information related to patients' socioeconomic, demographic and clinical factors during the patients' ED visits; and to develop predictive models using these associated factors including natural language elements to predict the medical imaging utilization at pediatric ED.

methodsPediatric patients' data from the 2012-2016 United States National Hospital Ambulatory Medical Care Survey was included to build the models to predict the use of imaging in children presenting to the ED. Multivariable logistic regression models were built with structured variables such as temperature, heart rate, age, and unstructured variables such as reason for visit, free text nursing notes and combined data available at triage. NLP techniques were used to extract information from the unstructured data.

resultsOf the 27,665 pediatric ED visits included in the study, 8394 (30.3%) received medical imaging in the ED, including 6922 (25.0%) who had an X-ray and 1367 (4.9%) who had a computed tomography (CT) scan. In the predictive model including only structured variables, the c-statistic was 0.71 (95% CI: 0.70-0.71) for any imaging use, 0.69 (95% CI: 0.68-0.70) for X-ray, and 0.77 (95% CI: 0.76-0.78) for CT. Models including only unstructured information had c-statistics of 0.81 (95% CI: 0.81-0.82) for any imaging use, 0.82 (95% CI: 0.82-0.83) for X-ray, and 0.85 (95% CI: 0.83-0.86) for CT scans. When both structured variables and free text variables were included, the c-statistics reached 0.82 (95% CI: 0.82-0.83) for any imaging use, 0.83 (95% CI: 0.83-0.84) for X-ray, and 0.87 (95% CI: 0.86-0.88) for CT.

conclusionsBoth CT and X-rays are commonly used in the pediatric ED with one third of the visits receiving at least one. Patients' socioeconomic, demographic and clinical factors presented at ED triage period were associated with the medical imaging utilization. Predictive models combining structured and unstructured variables available at triage performed better than models using structured or unstructured variables alone, suggesting the potential for use of NLP in determining resource utilization.

Indexed as

Emergency Service, HospitalNatural Language ProcessingAdolescentChildChild, PreschoolFemaleHealth Care SurveysHumansInfantLogistic ModelsMalePatient Acceptance of Health CareRadiographySocioeconomic FactorsTomography, X-Ray ComputedTriageMedical imaging utilizationNatural language processingPediatric emergency departmentPredictive model

Identifiers

PMID31888609
PMCPMC6937987

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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.