title: The food choice at work study: effectiveness of complex workplace dietary interventions on dietary behaviours and diet-related disease risk - study protocol for a clustered controlled trial.
abstract: BACKGROUND
  Dietary behaviour interventions have the potential to reduce diet-related disease. Ample opportunity exists to implement these interventions in the workplace. The overall aim is to assess the effectiveness and cost-effectiveness of complex dietary interventions focused on environmental dietary modification alone or in combination with nutrition education in large manufacturing workplace settings.
  
  
  METHODS
  A clustered controlled trial involving four large multinational manufacturing workplaces in Cork will be conducted. The complex intervention design has been developed using the Medical Research Council's framework and the National Institute for Health and Clinical Excellence (NICE) guidelines and will be reported using the TREND statement for the transparent reporting of evaluations with non-randomized designs. It will draw on a soft paternalistic 'nudge' theoretical perspective. It will draw on a soft paternalistic "nudge" theoretical perspective. Nutrition education will include three elements: group presentations, individual nutrition consultations and detailed nutrition information. Environmental dietary modification will consist of five elements: (a) restriction of fat, saturated fat, sugar and salt, (b) increase in fibre, fruit and vegetables, (c) price discounts for whole fresh fruit, (d) strategic positioning of healthier alternatives and (e) portion size control. No intervention will be offered in workplace A (control). Workplace B will receive nutrition education. Workplace C will receive nutrition education and environmental dietary modification. Workplace D will receive environmental dietary modification alone. A total of 448 participants aged 18 to 64 years will be selected randomly. All permanent, full-time employees, purchasing at least one main meal in the workplace daily, will be eligible. Changes in dietary behaviours, nutrition knowledge, health status with measurements obtained at baseline and at intervals of 3 to 4 months, 7 to 9 months and 13 to 16 months will be recorded. A process evaluation and cost-effectiveness economic evaluation will be undertaken.
  
  
  CONCLUSIONS
  A 'Food Choice at Work' toolbox (concise teaching kit to replicate the intervention) will be developed to inform and guide future researchers, workplace stakeholders, policy makers and the food industry.
  
  
  BACKGROUND
  Current Controlled Trials, ISRCTN35108237.
authors.affiliation: Department of Epidemiology and Public Health, University College Cork, 4th Floor Western Gateway Building, Western Road, Cork City, Ireland. f.geaney@ucc.ie.
authors.forename: Fiona
authors.initials: F
authors.lastname: Geaney
authors.forename: Jessica
authors.initials: J
authors.lastname: Scotto Di Marrazzo
authors.forename: Clare
authors.initials: C
authors.lastname: Kelly
authors.forename: Anthony P
authors.initials: AP
authors.lastname: Fitzgerald
authors.forename: Janas M
authors.initials: JM
authors.lastname: Harrington
authors.forename: Ann
authors.initials: A
authors.lastname: Kirby
authors.forename: Ken
authors.initials: K
authors.lastname: McKenzie
authors.forename: Birgit
authors.initials: B
authors.lastname: Greiner
authors.forename: Ivan J
authors.initials: IJ
authors.lastname: Perry
mesh_terms: D000293:Adolescent; D000328:Adult; D002755:Choice Behavior; D003362:Cost-Benefit Analysis; D004032:Diet / Q000009:adverse effects / Q000191:economics; D050528:Diet, Carbohydrate-Restricted; D018752:Diet, Fat-Restricted; D004039:Diet, Sodium-Restricted; D005247:Feeding Behavior; D005638:Fruit; D017048:Health Care Costs; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007494:Ireland; D008875:Middle Aged; D009752:Nutritional Status; D009786:Occupational Health Services / Q000191:economics; D010353:Patient Education as Topic; D064787:Portion Size; D012107:Research Design; D012307:Risk Factors; D040242:Risk Reduction Behavior; D013997:Time Factors; D014675:Vegetables; D017132:Workplace / Q000191:economics; D055815:Young Adult