A Pilot Randomized Controlled Trial of a Digital Intervention Aimed at Improving Food Purchasing Behavior: The Front-of-Pack Food Labels Impact on Consumer Choice Study.
A Pilot Randomized Controlled Trial of a Digital Intervention Aimed at Improving Food Purchasing Behavior: The Front-of-Pack Food Labels Impact on Consumer Choice Study.
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DOI：
10.2196/formative.9910
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发表时间：
2019-04-08
影响因子：
2.2
通讯作者：
Rayner, Mike
中科院分区：
文献类型：
--
作者：
Harrington, Richard A;Scarborough, Peter;Rayner, Mike
背景技术背景：英国的大多数食品都是在超市购买的，其中许多购买都是通过超市忠诚卡数据进行跟踪的。使用这些数据可能是一种有效的方式来开发远程公共卫生干预措施，并客观地衡量其有效性，在改变食品购买behavior.Objective：包装前食品标签：对消费者选择的影响（FLICC）研究是一个试点随机对照试验的数字行为改变干预。该试验旨在收集招募率和保留率的数据，并提供主要结局的效应量估计值（即食食品和购买的比萨饼的健康），以通知一个更大的试验。干预措施包括一个网站，参与者可以访问针对以前购买即食食品和比萨饼的定制反馈，设定行为改变的目标，并使用交通灯标签对推荐的健康购物行为进行建模和实践。控制包括基于Web的交通灯标签的信息。参与者是通过电子邮件从参与超市持有的忠诚卡持有者名单中招募的。参与者在招募前6个月、6周干预期和12周洗脱期内购买的所有食品和饮料都由参与超市转移到研究团队。即食食品和比萨饼的健康程度是使用预先开发的量表来测量的，该量表仅基于食物上的交通灯颜色。在招募，干预结束时，和洗脱结束时完成问卷，以估计干预对介导行为变化（例如，信念和意图形成）的变量的影响。结果：我们招募了496名参与者，从最初的电子邮件到50，000人。只有3人退出了研究，并收到了所有其他参与者的购买数据。共有208名参与者完成了所有3份问卷。在干预期间，干预组和对照组之间购买的即食食品和比萨饼的健康状况没有差异（P =.32）或洗脱时（P =.59）.结论：虽然FLICC的研究没有发现干预对食品购买行为影响的证据，这项试验中使用的独特方法为未来计划与超市合作伙伴合作使用超市忠诚卡数据的研究提供了信息。试验的经验展示了在公共卫生研究中使用忠诚卡数据的可能性和挑战。试验注册：ISRCTN Registry ISRCTN19316955; www.example.com（由WebCite存档，网址为http：//www.webcitation.org/76IVZ9WjK）。国际注册报告标识符（IRRID）：RR2 - 10.1186/s40814 - 015 - 0015 - 1。
BACKGROUND: Most food in the United Kingdom is purchased in supermarkets, and many of these purchases are routinely tracked through supermarket loyalty card data. Using such data may be an effective way to develop remote public health interventions and to measure objectively their effectiveness at changing food purchasing behavior.OBJECTIVE: The Front-of-pack food Labels: Impact on Consumer Choice (FLICC) study is a pilot randomized controlled trial of a digital behavior change intervention. This pilot trial aimed to collect data on recruitment and retention rates and to provide estimates of effect sizes for the primary outcome (healthiness of ready meals and pizzas purchased) to inform a larger trial.METHODS: The intervention consisted of a website where participants could access tailored feedback on previous purchases of ready meals and pizzas, set goals for behavior change, and model and practice the recommended healthy shopping behavior using traffic light labels. The control consisted of Web-based information on traffic light labeling. Participants were recruited via email from a list of loyalty card holders held by the participating supermarket. All food and drink purchases for the participants for the 6 months before recruitment, during the 6-week intervention period, and during a 12-week washout period were transferred to the research team by the participating supermarket. Healthiness of ready meals and pizzas was measured using a predeveloped scale based solely on the traffic light colors on the foods. Questionnaires were completed at recruitment, end of the intervention, and end of washout to estimate the effect of the intervention on variables that mediate behavior change (eg, belief and intention formation).RESULTS: We recruited 496 participants from an initial email to 50,000 people. Only 3 people withdrew from the study, and purchase data were received for all other participants. A total of 208 participants completed all 3 questionnaires. There was no difference in the healthiness of purchased ready meals and pizzas between the intervention and control arms either during the intervention period (P=.32) or at washout (P=.59).CONCLUSIONS: Although the FLICC study did not find evidence of an impact of the intervention on food purchasing behavior, the unique methods used in this pilot trial are informative for future studies that plan to use supermarket loyalty card data in collaboration with supermarket partners. The experience of the trial showcases the possibilities and challenges associated with the use of loyalty card data in public health research.TRIAL REGISTRATION: ISRCTN Registry ISRCTN19316955; http://www.isrctn.com/ISRCTN19316955 (Archived by WebCite at http://www.webcitation.org/76IVZ9WjK).INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.1186/s40814-015-0015-1.