Impact of increasing the proportion of healthier foods available on energy purchased in worksite cafeterias: A stepped wedge randomized controlled pilot trial

Increasing the proportion of healthier foods available could encourage healthier consumption, but evidence to date is limited in scope and quality. The current study aimed to: (a) examine the feasibility and acceptability of intervening to change product availability in worksite cafeterias; and (b)...

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Veröffentlicht in:Appetite 2019-02, Vol.133, p.286-296
Hauptverfasser: Pechey, Rachel, Cartwright, Emma, Pilling, Mark, Hollands, Gareth J., Vasiljevic, Milica, Jebb, Susan A., Marteau, Theresa M.
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container_issue
container_start_page 286
container_title Appetite
container_volume 133
creator Pechey, Rachel
Cartwright, Emma
Pilling, Mark
Hollands, Gareth J.
Vasiljevic, Milica
Jebb, Susan A.
Marteau, Theresa M.
description Increasing the proportion of healthier foods available could encourage healthier consumption, but evidence to date is limited in scope and quality. The current study aimed to: (a) examine the feasibility and acceptability of intervening to change product availability in worksite cafeterias; and (b) estimate the impact on energy purchased of increasing the proportion of healthier (i.e. lower energy) cooked meals, snacks, cold drinks and sandwiches. Six English worksite cafeterias increased the proportion of healthier foods available, aiming to keep the total number of options constant, in a stepped wedge randomized controlled pilot trial conducted between January and May 2017. The intervention was generally successfully implemented and acceptable to clientele. Generalized linear mixed models showed a reduction of 6.9% (95%CI: -11.7%, −1.7%, p = 0.044) in energy (kcal) purchased from targeted food categories across all sites. However, impact varied across sites, with energy purchased from targeted categories significantly reduced in two sites (−10.7% (95%CI: -18.1% to −2.6%, p = 0.046); −18.4% (95%CI: -26.9% to −8.8%, p = 0.013)), while no significant differences were seen in the other four sites. Overall, increasing the proportion of healthier options available in worksite cafeterias seems a promising intervention to reduce energy purchased but contextual effects merit further study.
doi_str_mv 10.1016/j.appet.2018.11.013
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subjects Adult
Availability
Cafeterias
Consumer Behavior
Diet, Healthy
Energy
Energy Intake
Female
Food
Food Services
Food Supply
Humans
Linear Models
Male
Pilot
Pilot Projects
RCT
Workplace
title Impact of increasing the proportion of healthier foods available on energy purchased in worksite cafeterias: A stepped wedge randomized controlled pilot trial
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