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The effectiveness of workplace dietary interventions : protocol for a systematic review and meta-analysis.

Smith, S.A. and Lake, A.A. and Summerbell, C. and Araujo-Soares, V. and Hillier-Brown, F. (2016) 'The effectiveness of workplace dietary interventions : protocol for a systematic review and meta-analysis.', Systematic reviews., 5 . p. 20.


Background: The lack of evidence of the role of workplaces as settings for behaviour change delivery and the failure to recognise and address the complexity of the work environment has been acknowledged. This systematic review and meta-analysis will identify the effectiveness of dietary interventions in the workplace facilitating an understanding of what works, why and how by identifying key components of and examining the theoretical models of behaviour change underpinning successful dietary interventions in the workplace. Methods/design: We will conduct searches in MEDLINE, EMBASE, CINAHL, PsycINFO, CENTRAL and PubMed for studies that assess dietary interventions based within workplace settings in any country, of any length of time or duration of follow-up. We will include all randomised controlled trials (RCTs), non-randomised controlled trials (NRCTs), controlled before-after studies (CBAs) and interrupted time series (ITS) studies with a control group. Risk of bias of included studies will be assessed using a tool adapted from the Cochrane Public Health Review Group’s recommended Effective Public Health Practice Project Quality Assessment Tool for Quantitative Studies. Meta-analysis will be conducted if appropriate, or a narrative synthesis will be conducted following the ESRC Narrative Synthesis Guidance. Discussion: This paper outlines the study protocol for a systematic review and meta-analysis that will identify, critically appraise, and summarise the relevant evidence on the effectiveness and implications of interventions to promote healthier dietary behaviours in the workplace. This review will give an overview of the evidence and provide a guide for development of interventions promoting dietary behaviour change in workplaces. Systematic review registration: PROSPERO CRD42015015175

Item Type:Article
Keywords:Workplace, Diet, Nutrition, Intervention, Health promotion, Systematic Review, Meta-analysis.
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Publisher statement:© 2016 Smith et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.
Date accepted:27 January 2016
Date deposited:22 February 2016
Date of first online publication:03 February 2016
Date first made open access:22 February 2016

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