Evidence map›Paper›PMID 30655580›Full record

ArticleInternational journal of obesity (2005)2019

A Delphi study to build consensus on the definition and use of big data in obesity research.

Christina Vogel, Stephen Zwolinsky, Claire Griffiths, Matthew Hobbs, Emily Henderson, Emma Wilkins

Abstract readConsensus Statement
In one paragraph

Article in International journal of obesity (2005), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 202 papers, 6 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
202citing papers in PubMed, 6 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

202 citing papers in PubMed, 6 syntheses or guidelines pooled it.

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  19. Building consensus on what to include in public health expenditures: A modified Delphi study in Canada.Canadian journal of public health = Revue canadienne de sante publique · 2026
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142 more citing papers are in PubMed but not listed here.

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.

Christina Vogel *MRC Lifecourse Epidemiology Unit, University of Southampton, SO16 6YD, Southampton, UK. cv@mrc.soton.ac.uk.
Stephen Zwolinsky *School of Sport, Leeds Beckett University, LS6 3QQ, Leeds, UK.
Claire GriffithsSchool of Sport, Leeds Beckett University, LS6 3QQ, Leeds, UK.
Matthew HobbsGeoHealth Laboratory, Geospatial Research Institute, University of Canterbury, Christchurch, New Zealand.
Emily HendersonInstitute of Health & Society, Newcastle University, Newcastle-upon-Tyne, NE1 4LP, UK.
Emma WilkinsSchool of Sport, Leeds Beckett University, LS6 3QQ, Leeds, UK.

Funding

Department of Health DRF-2011-04-015Medical Research Council MC_UU_12011/4
6 · The paper itself

Abstract

background'Big data' has great potential to help address the global health challenge of obesity. However, lack of clarity with regard to the definition of big data and frameworks for effectively using big data in the context of obesity research may be hindering progress. The aim of this study was to establish agreed approaches for the use of big data in obesity-related research.

methodsA Delphi method of consensus development was used, comprising three survey rounds. In Round 1, participants were asked to rate agreement/disagreement with 77 statements across seven domains relating to definitions of, and approaches to, using big data in the context of obesity research. Participants were also asked to contribute further ideas in relation to these topics, which were incorporated as new statements (n = 8) in Round 2. In Rounds 2 and 3 participants re-appraised their ratings in view of the group consensus.

resultsNinety-six experts active in obesity-related research were invited to participate. Of these, 36/96 completed Round 1 (37.5% response rate), 29/36 completed Round 2 (80.6% response rate) and 26/29 completed Round 3 (89.7% response rate). Consensus (defined as > 70% agreement) was achieved for 90.6% (n = 77) of statements, with 100% consensus achieved for the Definition of Big Data, Data Governance, and Quality and Inference domains.

conclusionsExperts agreed that big data was more nuanced than the oft-cited definition of 'volume, variety and velocity', and includes quantitative, qualitative, observational or intervention data from a range of sources that have been collected for research or other purposes. Experts repeatedly called for third party action, for example to develop frameworks for reporting and ethics, to clarify data governance requirements, to support training and skill development and to facilitate sharing of big data. Further advocacy will be required to encourage organisations to adopt these roles.

Indexed as

Big DataBiomedical ResearchObesityAdultDelphi TechniqueFemaleHumansMaleMiddle AgedResearch Design

Identifiers

PMID30655580
PMCPMC6892733

What OpenQuestion holds

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Registered trials

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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.