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dc.contributor.authorEjlerskov, Katrineen
dc.contributor.authorSharp, Stephenen
dc.contributor.authorStead, Martineen
dc.contributor.authorAdamson, Ashley Jen
dc.contributor.authorWhite, Martinen
dc.contributor.authorAdams, Jeanen
dc.date.accessioned2018-12-22T00:31:19Z
dc.date.available2018-12-22T00:31:19Z
dc.date.issued2018-12-05en
dc.identifier.issn1479-5868
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/287398
dc.description.abstractAbstract Background: Dietary inequalities between population groups are common with older and more affluent individuals tending to have healthier diets. Differential responses to health interventions may exacerbate inequalities. Changing what foods are displayed at supermarket checkouts is one intervention that has the potential to change diets. The aim of this study was to assess whether differences in purchases of common checkout foods from supermarkets with different checkout food policies varied according to age group and social grade. Methods: We analysed annual household purchase data for 2013-17 from nine leading UK supermarkets, split according to age of the main household shopper and household social grade. Checkout food policies were categorised as clear and consistent, vague or inconsistent, and none. Policies were heterogeneous but all included removal of confectionery and/or chocolate from checkouts. Mixed effects linear regression models were used to assess differences in purchases of common checkout foods (sugary confectionery, chocolate and potato crisps) by checkout food policy and whether these varied by age group or occupational social grade. Results: Relative to supermarkets with no checkout food policy, 14% (95% CI: 4-22%) fewer purchases of common checkout foods per household per percentage market share were made in supermarkets with a clear and consistent policy. Adjusted mean numbers of purchases were higher in older age groups than the youngest, but there were no differences between the highest and other social grads. There were significant interactions between checkout food policy and both age group and social grade. In supermarkets with clear and consistent policies, 23% (6-36%), 20% (2-34%), and 23% (7-37%) fewer purchases were made in age groups 45-54, 55-64 and 65+ years respectively, compared to all groups combined. In supermarkets with clear and consistent policies, there were also 21% (4-35%), 26% (9-39%) and 21% (3-35%) fewer purchases made by households in the highest two and lowest social grades respectively, compared to all groups combined. Conclusions: Households with older main shoppers and those in the most and least affluent social grades may be most responsive to supermarket checkout food policies. As older and more affluent groups tend to have healthier diets overall, it is unlikely that supermarket checkout food policies contribute to greater dietary equity.
dc.description.sponsorshipThis research was funded by a grant from the Public Health Research Consortium, a Department of Health Policy Research Unit in the UK. JA and MW are funded by the Centre for Diet and Activity Research (CEDAR). CEDAR is UKCRC Public Health Research Centres of Excellence. Funding from the British Heart Foundation, Cancer Research UK, Economic and Social Research Council, Medical Research Council, the National Institute for Health Research, and the Wellcome Trust, under the auspices of the UK Clinical Research Collaboration, is gratefully acknowledged. AA is funded as an NIHR Research Professor.
dc.format.mediumElectronicen
dc.languageengen
dc.publisherBioMed Central
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectHumansen
dc.subjectDieten
dc.subjectFamily Characteristicsen
dc.subjectAge Factorsen
dc.subjectResearch Designen
dc.subjectNutrition Policyen
dc.subjectSocioeconomic Factorsen
dc.subjectFood Supplyen
dc.subjectAdulten
dc.subjectAgeden
dc.subjectMiddle Ageden
dc.subjectConsumer Behavioren
dc.titleSocio-economic and age variations in response to supermarket-led checkout food policies: a repeated measures analysis.en
dc.typeArticle
prism.issueIdentifier1en
prism.publicationDate2018en
prism.publicationNameThe international journal of behavioral nutrition and physical activityen
prism.startingPage125
prism.volume15en
dc.identifier.doi10.17863/CAM.34702
dcterms.dateAccepted2018-11-21en
rioxxterms.versionofrecord10.1186/s12966-018-0755-4en
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-12-05en
dc.contributor.orcidSharp, Stephen [0000-0003-2375-1440]
dc.contributor.orcidStead, Martine [0000-0002-3066-4604]
dc.contributor.orcidAdamson, Ashley J [0000-0003-3735-2846]
dc.contributor.orcidWhite, Martin [0000-0002-1861-6757]
dc.contributor.orcidAdams, Jean [0000-0002-5733-7830]
dc.identifier.eissn1479-5868
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idWellcome Trust (087636/Z/08/Z)
pubs.funder-project-idESRC (ES/G007462/1)
pubs.funder-project-idMRC (MR/K023187/1)
pubs.funder-project-idDepartment of Health (via London School of Hygiene & Tropical Medicine (LSHTM)) (PHPEHF50/22)


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International