Health Promotion and Healthier Products Increase Vending Purchases: A Randomized Factorial Trial
Health Promotion and Healthier Products Increase Vending Purchases: A Randomized Factorial Trial
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DOI：
10.1016/j.jand.2016.12.006
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发表时间：
2017-07-01
影响因子：
4.8
通讯作者：
Ickovics, Jeannette R.
中科院分区：
文献类型：
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作者：
Hua, Sophia V.;Kimmel, Lisa;Ickovics, Jeannette R.
背景 当前的食品环境中营养匮乏的食品和饮料普遍存在，最明显的是自动售货机提供的产品。目前很少有研究探索可能导致更健康的自动售货机购买的不同干预措施。 目的 研究更健康的产品供应、降价和/或促销标志如何影响零食和饮料自动售货机的销售和收入。 设计 进行了 2x2x2 因子随机对照试验。 参与者/环境 大学校园内的学生、教职员工和员工。 干预 所有位于同一地点的零食和饮料自动售货机（n = 56、28 款零食和 28 款饮料）被随机分为八个之一条件：提供更健康的产品和/或更健康的产品降价 25% 和/或机器上的促销标志。将 5 个月研究期（2015 年 2 月至 6 月）的总销售额和收入数据与 1 年前同月的数据进行了比较。分析于 2015 年 7 月进行。主要结果指标 2014 年 2 月至 2015 年 6 月期间销售量和收入的变化。进行统计分析。进行线性回归模型（主效应和交互效应）并进行 t 检验分析。结果 更健康的产品指南与零食自动售货促销标志之间的交互作用。机器记录了收入的增加（P
Background The current food environment has a high prevalence of nutrient-sparse foods and beverages, most starkly seen in vending machine offerings. There are currently few studies that explore different interventions that might lead to healthier vending machine purchases.Objective To examine how healthier product availability, price reductions, and/or promotional signs affect sales and revenue of snack and beverage vending machines.Design A 2x2x2 factorial randomized controlled trial was conducted.Participants/setting Students, staff, and employees on a university campus.Intervention All co-located snack and beverage vending machines (n=56, 28 snack and 28 beverage) were randomized into one of eight conditions: availability of healthier products and/or 25% price reduction for healthier items and/or promotional signs on machines. Aggregate sales and revenue data for the 5-month study period (February to June 2015) were compared with data from the same months 1 year prior. Analyses were conducted July 2015.Main outcome measures The change in units sold and revenue between February through June 2014 and 2015.Statistical analyses performed Linear regression models (main effects and interaction effects) and t test analyses were performed.Results The interaction between healthier product guidelines and promotional signs in snack vending. machines documented increased revenue (P