Abstract
BackgroundThe 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/designWe 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.DiscussionThis 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 registrationPROSPERO CRD42015015175Electronic supplementary materialThe online version of this article (doi:10.1186/s13643-016-0200-1) contains supplementary material, which is available to authorized users.
Highlights
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 review will give an overview of the evidence and provide a guide for development of interventions promoting dietary behaviour change in workplaces
To explore if changes in weight, body mass index, body composition and/or waist circumference are observed in response to dietary interventions in the workplace
Summary
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. The increasing prevalence of adults who are overweight and obese is continuing to pose a major global public health problem. Recent WHO global estimates show that overall, about 13 % of the world’s adult population aged 18 years and over (11 % of men and 15 % of women) were obese in 2014, and % of adults (38 % of men and % of women) were overweight [1]. Estimates of the indirect costs of obesity such as loss of productivity in 2001 were £15.8 billion [5]. Coupled with the rise in obesity-associated comorbidities, the financial cost of obesity is continuing to rise
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