Evidence map›Paper›PMID 34796719›Full record

ArticleJournal of the American Heart Association2021

Natural Language Processing Enhances Prediction of Functional Outcome After Acute Ischemic Stroke.

Sheng-Feng Sung, Chih-Hao Chen, Ru-Chiou Pan, Ya-Han Hu, Jiann-Shing Jeng

Abstract read
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Article in Journal of the American Heart Association, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

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3 · Its place in the literature

Who cites it

23 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

5 authors.

Sheng-Feng SungDivision of Neurology Department of Internal Medicine Ditmanson Medical Foundation, Chia-Yi Christian Hospital Chiayi City Taiwan.ORCID 0000-0002-6253-8813
Chih-Hao ChenStroke Center and Department of Neurology National Taiwan University Hospital Taipei Taiwan.ORCID 0000-0002-1258-8775
Ru-Chiou PanDivision of Neurology Department of Internal Medicine Ditmanson Medical Foundation, Chia-Yi Christian Hospital Chiayi City Taiwan.
Ya-Han HuDepartment of Information Management National Central University Taoyuan City Taiwan.ORCID 0000-0002-3285-2983
Jiann-Shing JengStroke Center and Department of Neurology National Taiwan University Hospital Taipei Taiwan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background Conventional prognostic scores usually require predefined clinical variables to predict outcome. The advancement of natural language processing has made it feasible to derive meaning from unstructured data. We aimed to test whether using unstructured text in electronic health records can improve the prediction of functional outcome after acute ischemic stroke. Methods and Results Patients hospitalized for acute ischemic stroke were identified from 2 hospital stroke registries (3847 and 2668 patients, respectively). Prediction models developed using the first cohort were externally validated using the second cohort, and vice versa. Free text in the history of present illness and computed tomography reports was used to build machine learning models using natural language processing to predict poor functional outcome at 90 days poststroke. Four conventional prognostic models were used as baseline models. The area under the receiver operating characteristic curves of the model using history of present illness in the internal and external validation sets were 0.820 and 0.792, respectively, which were comparable to the National Institutes of Health Stroke Scale score (0.811 and 0.807). The model using computed tomography reports achieved area under the receiver operating characteristic curves of 0.758 and 0.658. Adding information from clinical text significantly improved the predictive performance of each baseline model in terms of area under the receiver operating characteristic curves, net reclassification improvement, and integrated discrimination improvement indices (all

Indexed as

Ischemic StrokeNatural Language ProcessingFunctional StatusHumansMachine LearningPrognosisacute ischemic strokemachine learningnatural language processingoutcome predictionrisk score

Identifiers

PMID34796719
PMCPMC9075227

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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.