Evidence map›Paper›PMID 33212975›Full record

ArticleJournal of clinical medicine2020

Global Asthma Network Phase I Surveillance: Geographical Coverage and Response Rates.

Philippa Ellwood, Eamon Ellwood, Charlotte Rutter, Virginia Perez-Fernandez, Eva Morales, Luis García-Marcos, Neil Pearce, M Innes Asher, David Strachan, On Behalf Of The Gan Phase I Study Group

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.0field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 48 citations in OpenAlex.

  1. Worldwide Impact of Human Development and Inequality on the Prevalence of Asthma, Rhinoconjunctivitis and Eczema. Global Asthma Network's Ecological Study.Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology · 2026
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  11. An Updated Comprehensive Review of Plants and Herbal Compounds with Antiasthmatic Effect.Evidence-based complementary and alternative medicine : eCAM · 2024
    Review
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  14. Fractional Dynamics Foster Deep Learning of COPD Stage Prediction.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2023
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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

10 authors at 5 institutions in 3 countries.

Philippa EllwoodDepartment of Paediatrics: Child and Youth Health, Faculty of Medical and Health Sciences, University of Auckland, 1023 Auckland, New Zealand.ORCID 0000-0002-1994-4023
Eamon EllwoodDepartment of Paediatrics: Child and Youth Health, Faculty of Medical and Health Sciences, University of Auckland, 1023 Auckland, New Zealand.
Charlotte RutterDepartment of Medical Statistics, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK.ORCID 0000-0002-9823-7932
Virginia Perez-FernandezPediatric Allergy and Pulmonology Units, 'Virgen de la Arrixaca' University Children's Hospital, University of Murcia, ARADyAL network and Biomedical Research Institute of Murcia (IMIB-Arrixaca), 30394 Murcia, Spain.
Eva MoralesBiomedical Research Institute of Murcia (IMIB-Arrixaca) and Department of Public Health Sciences, University of Murcia, 30394 Murcia, Spain.
Luis García-MarcosPediatric Allergy and Pulmonology Units, 'Virgen de la Arrixaca' University Children's Hospital, University of Murcia, ARADyAL network and Biomedical Research Institute of Murcia (IMIB-Arrixaca), 30394 Murcia, Spain.
Neil PearceDepartment of Medical Statistics, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK.
M Innes AsherDepartment of Paediatrics: Child and Youth Health, Faculty of Medical and Health Sciences, University of Auckland, 1023 Auckland, New Zealand.
David StrachanPopulation Health Research Institute, St George's University of London, London SW17 ORE, UK.
On Behalf Of The Gan Phase I Study Group
University of Auckland · NZInstituto Murciano de Investigación Biosanitaria · ESUniversity of London · GBSt George's, University of London · GBUniversidad de Murcia · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background-The Global Asthma Network (GAN) Phase I is surveying school pupils in high-income and low- or middle-income countries using the International Study of Asthma and Allergies in Childhood (ISAAC) methodology. Methods-Cross-sectional surveys of participants in two age groups in randomly selected schools within each centre (2015-2020). The compulsory age group is 13-14 years (adolescents), optionally including parents or guardians. Six to seven years (children) and their parents are also optional. Adolescents completed questionnaires at school, and took home adult questionnaires for parent/guardian completion. Children took home questionnaires for parent/guardian completion about the child and also adult questionnaires. Questions related to symptoms and risk factors for asthma and allergy, asthma management, school/work absence and hospitalisation. Results-53 centres in 20 countries completed quality checks by 31 May 2020. These included 21 centres that previously participated in ISAAC. There were 132,748 adolescents (average response rate 88.8%), 91,802 children (average response rate 79.1%), and 177,622 adults, with >97% answering risk factor questions and >98% answering questions on asthma management, school/work absence and hospitalisation. Conclusion-The high response rates achieved in ISAAC have generally been maintained in GAN. GAN Phase I surveys, partially overlapping with ISAAC centres, will allow within-centre analyses of time-trends in prevalence.

Indexed as

adults’ epidemiologyasthmachildrenglobalresponsessurveillance

Identifiers

PMID33212975
PMCPMC7698565
OpenAlexW3098203414

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.