A randomized trial of web-based behavioral economic interventions to promote healthy food choices among food pantry clients

项目总结 肥胖、不健康的饮食习惯和食品不安全是主要的公共卫生问题， 特别是影响生活在贫困中的个人。食品储藏室，为这些人提供免费食物 有需要的人越来越有兴趣促进健康选择，但很少有严格的研究 经过测试的低成本行为干预措施，以鼓励在食品储藏室选择健康食品 设置。这项建议的总体目标是进行为期一年的随机对照试验 在500名普通食品储藏室客户中比较行为经济学的影响 采取干预措施，通过基于网络的订购平台提供更健康的食物选择 常规护理(对照组)。在这家食品储藏室，顾客会被指定点数来“购买”食物和地点 他们通过基于触摸屏的计算机订购平台下单。我们将实施一个 使用几种行为经济策略的干预，并比较这种干预 到食品储藏室目前的在线订购系统(日常护理对照组)。我们的行为 经济干预使用以下四种策略来促进更健康的选择：1)违约 设置；2)健康的安置选择架构；3)简单和显著的营养信息； 4)社会规范信息。分配给干预组的食品储藏室客户将记录 进入通常的订餐平台，但它会在他们的购物篮中预先填充几个 默认设置为健康的首选项目(客户可以选择删除它们)。此外，作为客户， 浏览网站，健康的安置选择架构干预将把 在网页顶部为每个食物类别提供最健康的选项。第三次干预 组件将显示简单而突出的交通信号灯标签，以指示更多和 不太健康以及突出显示更健康食品的价格折扣的消息(例如， “白米改糙米可省1.5分”)。将显示第四次干预 指示最常选择的健康产品的社会规范消息(例如，超过一半 所有顾客在这里购物时都会点香蕉)。我们将会比较这两个 干预措施影响：1)从食品储藏室中挑选的食物的营养质量 交易数据；2)通过水果和蔬菜生物标记物和食物测量的膳食摄入量 频率问卷；3)客观测量体重、血压和糖化血红蛋白 级别。 好了！

PROJECT SUMMARY Obesity, unhealthy dietary habits, and food insecurity are major public health concerns, especially affecting individuals living in poverty. Food pantries, which provide free food to those in need, are increasingly interested in promoting healthy choices, but few rigorous studies have tested low-cost, behavioral interventions to encourage healthy food choices in food pantry settings. The overall objective of this proposal is to conduct a 1-year randomized-controlled trial among 500 regular food pantry clients to compare the influence of a behavioral economic intervention to promote healthier food choices delivered via a web-based ordering platform to usual care (control group). At this pantry, clients are assigned points to “buy” food and place their orders via a touchscreen-based computer ordering platform. We will implement an intervention that employs several behavioral economic strategies and compare this intervention to the food pantry’s current online ordering system (usual care control group). Our behavioral economic intervention uses the following four strategies to promote healthier choices: 1) default settings; 2) healthy placement choice architecture; 3) simple and salient nutrition messaging; and 4) social norms messaging. Food pantry clients assigned to the intervention group will log into the usual food ordering platform, but it will pre-populate their shopping basket with several healthy, preferred items as the default (clients can opt to remove them). In addition, as clients navigate the website, a healthy placement choice architecture intervention will place the healthiest options at the top of the webpage for each food category. The third intervention component will display simple and salient traffic light labels to indicate foods that are more and less healthy along with salient messaging to highlight price discounts on healthier foods (e.g., “save 1.5 points by switching from white to brown rice”). The fourth intervention will display social norms messaging indicating the most commonly selected healthy products (e.g., over half of all customers order bananas when shopping here). We will compare how these two interventions influence: 1) the nutritional quality of food selected from the pantry based on transaction data; 2) dietary intake measured by fruit and vegetable biomarkers and food frequency questionnaires; and 3) objectively measured weight, blood pressure, and HbA1c levels. !