Department of Social and Decision Sciences, Carnegie Mellon University, Pittsburgh, PA 15213-3890, USA.
Am J Public Health. 2013 Sep;103(9):1604-9. doi: 10.2105/AJPH.2013.301218. Epub 2013 Jul 18.
We examined the effect on food purchases of adding recommended calorie intake per day or per meal to the mandated calorie information posted on chain restaurant menus.
Before and after New York City implemented calorie posting on chain restaurant menus in 2008, we provided daily, per-meal, or no calorie recommendations to randomized subsets of adult lunchtime customers (n = 1121) entering 2 McDonald's restaurants, in Manhattan and Brooklyn, and collected receipts and survey responses as they exited. In linear and logistic regressions, with adjustment for gender, race, age, and day, we tested for simple differences in calories consumed and interactions between variables.
Posting calorie benchmarks had no direct impact, nor did it moderate the impact of calorie labels on food purchases. The recommendation appeared to promote a slight increase in calorie intake, attributable to increased purchases of higher-calorie entrées.
These results do not support the introduction of calorie recommendations as a means of enhancing the impact of posted calorie information or reducing the contribution of restaurant dining to the obesity epidemic.
我们研究了在连锁餐厅菜单上强制标注卡路里信息的基础上，添加每日或每餐推荐卡路里摄入量，对食品购买的影响。
在纽约市于 2008 年开始在连锁餐厅菜单上强制标注卡路里信息之前和之后，我们向进入曼哈顿和布鲁克林的 2 家麦当劳餐厅的随机选择的成年午餐时间顾客（n=1121）提供每日、每餐或不提供卡路里建议，并在他们离开时收集收据和调查回复。我们在进行线性和逻辑回归时，针对性别、种族、年龄和日期进行了调整，以检验消耗的卡路里之间的简单差异以及变量之间的相互作用。
发布卡路里基准值没有直接影响，也没有调节卡路里标签对食品购买的影响。该建议似乎略微增加了卡路里的摄入量，这归因于购买了更高卡路里的主菜。
这些结果不支持引入卡路里建议作为增强所贴卡路里信息的影响或减少餐厅就餐对肥胖流行的贡献的手段。
