Evidence map›Paper›PMID 28428130›Full record

ArticleThe Journal of investigative dermatology2017

Development and Validation of an Algorithm to Accurately Identify Atopic Eczema Patients in Primary Care Electronic Health Records from the UK.

Katrina Abuabara, Alexa M Magyari, Ole Hoffstad, Zarif K Jabbar-Lopez, Liam Smeeth, Hywel C Williams, Joel M Gelfand, David J Margolis, Sinead M Langan

Abstract readValidation Study
In one paragraph

Article in The Journal of investigative dermatology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 2 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

47 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Atopic dermatitis is associated with herpes zoster in adults - A matched cohort study using electronic health records data in England.Journal der Deutschen Dermatologischen Gesellschaft = Journal of the German Society of Dermatology : JDDG · 2026
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  20. Validation of a primary care electronic medical records case definition for eczema: retrospective cross-sectional study.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2023
    Article
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

9 authors.

Katrina AbuabaraProgram for Clinical Research, Department of Dermatology, University of California San Francisco, San Francisco, California, USA. Electronic address: Katrina.abuabara@ucsf.edu.
Alexa M MagyariDepartment of Health Policy & Management, University of California Berkeley School of Public Health, Berkeley, California, USA.
Ole HoffstadDepartment of Biostatistics, Epidemiology, and Bioinformatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA.
Zarif K Jabbar-LopezUnit for Population-Based Dermatology Research, St John's Institute of Dermatology, King's College London, London, UK.
Liam SmeethFaculty of Epidemiology & Population Health, London School of Hygiene and Tropical Medicine, London, UK.
Hywel C WilliamsCentre of Evidence-Based Dermatology, University of Nottingham, Nottingham, UK.
Joel M GelfandDepartment of Biostatistics, Epidemiology, and Bioinformatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA; Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA.
David J MargolisDepartment of Biostatistics, Epidemiology, and Bioinformatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA; Department of Dermatology, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA.
Sinead M LanganFaculty of Epidemiology & Population Health, London School of Hygiene and Tropical Medicine, London, UK.

Funding

Engaging University of California Stakeholders for Biorespository ResearchUL1TR000004 · NCATS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI GRANDIS, JENNIFER RUBIN · 2012 to 2015
$78.0M
Psoriasis and the Risk of DiabetesK24AR064310 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI GELFAND, JOEL M · 2013 to 2017
$870k
AHRQ HHS T32 HS022241Department of Health NIHR/CS/010/014NCATS NIH HHS UL1 TR000004NIAMS NIH HHS K24 AR064310Wellcome Trust
6 · The paper itself

Abstract

Electronic health records hold great promise for clinical and epidemiologic research. Undertaking atopic eczema (AE) research using such data is challenging because of its episodic and heterogeneous nature. We sought to develop and validate a diagnostic algorithm that identifies AE cases based on codes used for electronic records used in the UK Health Improvement Network. We found that at least one of five diagnosis codes plus two treatment codes for any skin-directed therapy were likely to accurately identify patients with AE. To validate this algorithm, a questionnaire was sent to the physicians of 200 randomly selected children and adults. The primary outcome, positive predictive value for a physician-confirmed diagnosis of AE, was 86% (95% confidence interval = 80-91). Additional criteria increased the PPV up to 95% but would miss up to 89% of individuals with physician-confirmed AE. The first and last entered diagnosis codes for individuals showed good agreement with the physician-confirmed age at onset and last disease activity; the mean difference was 0.8 years (95% confidence interval = -0.3 to 1.9) and -1.3 years (95% confidence interval = -2.5 to -0.1), respectively. A combination of diagnostic and prescription codes can be used to reliably estimate the diagnosis and duration of AE from The Health Improvement Network primary care electronic health records in the UK.

Indexed as

AlgorithmsElectronic Health RecordsAdolescentAdultChildDatabases, FactualDermatitis, AtopicFemaleFollow-Up StudiesHumansMalePrimary Health CareSurveys and QuestionnairesTime FactorsUnited KingdomYoung Adult

Identifiers

PMID28428130
PMCPMC5883318

What OpenQuestion holds

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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.