Evidence map›Paper›PMID 29425639›Full record

ArticleInternational journal of medical informatics2018

Natural language processing of clinical notes for identification of critical limb ischemia.

Naveed Afzal, Vishnu Priya Mallipeddi, Sunghwan Sohn, Hongfang Liu, Rajeev Chaudhry, Christopher G Scott, Iftikhar J Kullo, Adelaide M Arruda-Olson

Open access · hybridAbstract read
In one paragraph

Article in International journal of medical informatics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 pooled it
7.4field-weighted citation impact, top 2% 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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 96 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

8 authors at 1 institution in 1 country.

Naveed AfzalDepartment of Health Sciences Research, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Vishnu Priya MallipeddiDepartment of Cardiovascular Diseases, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Sunghwan SohnDepartment of Health Sciences Research, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Hongfang LiuDepartment of Health Sciences Research, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Rajeev ChaudhryDivision of Primary Care Medicine, Knowledge Delivery Center and Center for Innovation, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Christopher G ScottDepartment of Health Sciences Research, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Iftikhar J KulloDepartment of Cardiovascular Diseases, Mayo Clinic and Mayo Foundation, Rochester, MN, United States.
Adelaide M Arruda-OlsonDepartment of Cardiovascular Diseases, Mayo Clinic and Mayo Foundation, Rochester, MN, United States. Electronic address: ArrudaOlson.Adelaide@mayo.edu.
Mayo Clinic · US

Funding

Genomic Basis of Susceptibility to COVID-19 Infection and its ComplicationsU01HG006379 · NHGRI · MAYO CLINIC ROCHESTER · PI Richard R. Sharp · 2011 to 2026
$16.5M
Rochester Epidemiology ProjectR01AG034676 · NIA · MAYO CLINIC ROCHESTER · PI ROCCA, WALTER A, ST SAUVER, JENNIFER LYNN · 2010 to 2019
$9.5M
EMR Phenotypes and Community Engaged Genomic AssociationsU01HG004599 · NHGRI · MAYO CLINIC ROCHESTER · PI CHUTE, CHRISTOPHER G · 2007 to 2010
$3.7M
Natural language processing for clinical and translational researchR01GM102282 · NIGMS · MAYO CLINIC ROCHESTER · PI LIU, HONGFANG, PAKHOMOV, SERGUEI VS · 2013 to 2016
$2.5M
Novel Informatics Approaches for Ascertainment of PAD Status and Adverse OutcomesK01HL124045 · NHLBI · MAYO CLINIC ROCHESTER · PI ARRUDA-OLSON, ADELAIDE MARIA MARTINS · 2015 to 2019
$820k
NHGRI NIH HHS U01 HG004599NHGRI NIH HHS U01 HG006379NHLBI NIH HHS K01 HL124045NIA NIH HHS R01 AG034676NIGMS NIH HHS R01 GM102282
6 · The paper itself

Abstract

backgroundCritical limb ischemia (CLI) is a complication of advanced peripheral artery disease (PAD) with diagnosis based on the presence of clinical signs and symptoms. However, automated identification of cases from electronic health records (EHRs) is challenging due to absence of a single definitive International Classification of Diseases (ICD-9 or ICD-10) code for CLI. METHODS AND

resultsIn this study, we extend a previously validated natural language processing (NLP) algorithm for PAD identification to develop and validate a subphenotyping NLP algorithm (CLI-NLP) for identification of CLI cases from clinical notes. We compared performance of the CLI-NLP algorithm with CLI-related ICD-9 billing codes. The gold standard for validation was human abstraction of clinical notes from EHRs. Compared to billing codes the CLI-NLP algorithm had higher positive predictive value (PPV) (CLI-NLP 96%, billing codes 67%, p < 0.001), specificity (CLI-NLP 98%, billing codes 74%, p < 0.001) and F1-score (CLI-NLP 90%, billing codes 76%, p < 0.001). The sensitivity of these two methods was similar (CLI-NLP 84%; billing codes 88%; p < 0.12).

conclusionsThe CLI-NLP algorithm for identification of CLI from narrative clinical notes in an EHR had excellent PPV and has potential for translation to patient care as it will enable automated identification of CLI cases for quality projects, clinical decision support tools and support a learning healthcare system.

Indexed as

AlgorithmsElectronic Health RecordsNatural Language ProcessingAgedCase-Control StudiesData MiningFemaleHumansIschemiaLower ExtremityMalePeripheral Arterial DiseaseCritical limb ischemiaElectronic health recordsNatural language processingPeripheral artery diseaseSubphenotyping

Identifiers

PMID29425639
PMCPMC5808583
OpenAlexW2778732622

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.