Social norms and financial incentives to promote employees' healthy food choices: A randomized controlled trial.
Social norms and financial incentives to promote employees' healthy food choices: A randomized controlled trial.
复制标题
促进员工健康食品选择的社会规范和经济激励：一项随机对照试验。
DOI：
10.1016/j.ypmed.2016.01.017
复制
发表时间：
2016
影响因子：
5.1
通讯作者：
Levy,DouglasE
中科院分区：
文献类型：
--
作者：
Thorndike,AnneN;Riis,Jason;Levy,DouglasE
预防肥胖需要人口层面的战略，以改善健康食品的选择。我们对马萨诸塞州总医院的2672名员工进行了一项随机对照试验，他们是医院自助餐厅的常客，所有项目都标有绿色（健康），黄色（健康），（不太健康），或红色（不健康）以确定是否社会规范（同行比较）反馈有或没有财政激励增加员工的健康食品的选择。1）每月一封信，信中有关于健康食品购买的社会规范反馈，将员工与“所有”和“最健康”的客户进行比较（仅反馈）; 2）每月一封信，信中有社会规范反馈加上增加绿色购买的小的财务激励（反馈激励）;或3）没有接触（控制）。主要结果是3个月干预结束时绿色标签购买比例的变化。事后分析检查线性trends.ResultsAt基线，绿色标签的购买比例（50%）没有武器之间的差异。在3个月的干预结束时，与对照组相比，反馈激励组绿色标签购买的百分比增加更大（2.2% vs. 0.1%，P = 0.03），但两个干预组没有差异。与对照组相比，仅反馈组（P = 0.04）和反馈激励组（P = 0.004）中绿色标签购买的增加率更高。在结束了3个月的清洗，有控制和干预arms.ConclusionsSocial规范加上小的经济激励措施增加了员工的健康食品的选择在短期内没有差异。未来的研究将需要评估这种相对低成本的干预对员工食物选择和体重的长期影响。Trials.gov
ObjectivePopulation-level strategies to improve healthy food choices are needed for obesity prevention. We conducted a randomized controlled trial of 2672 employees at the Massachusetts General Hospital who were regular customers of the hospital cafeteria with all items labeled green (healthy), yellow (less healthy), or red (unhealthy) to determine if social norm (peer-comparison) feedback with or without financial incentives increased employees' healthy food choices.MethodsParticipants were randomized in 2012 to three arms: 1) monthly letter with social norm feedback about healthy food purchases, comparing employee to “all” and to “healthiest” customers (feedback-only); 2) monthly letter with social norm feedback plus small financial incentive for increasing green purchases (feedback-incentive); or 3) no contact (control). The main outcome was change in proportion of green-labeled purchases at the end of 3-month intervention. Post-hoc analyses examined linear trends.ResultsAt baseline, the proportion of green-labeled purchases (50%) did not differ between arms. At the end of the 3-month intervention, the percentage increase in green-labeled purchases was larger in the feedback-incentive arm compared to control (2.2% vs. 0.1%, P = 0.03), but the two intervention arms were not different. The rate of increase in green-labeled purchases was higher in both feedback-only (P = 0.04) and feedback-incentive arms (P = 0.004) compared to control. At the end of a 3-month wash-out, there were no differences between control and intervention arms.ConclusionsSocial norms plus small financial incentives increased employees' healthy food choices over the short-term. Future research will be needed to assess the impact of this relatively low-cost intervention on employees' food choices and weight over the long-term.Trial Registration: Clinical Trials.gov: NCT01604499.