1Centro de Investigación Básica en Psicología, Facultad de Psicología,Universidad de la República,Tristán Narvaja 1674, Montevideo,Uruguay.
2Sensometrics & Consumer Science,Instituto Polo Tecnológico de Pando, Facultad de Química,Universidad de la República,Pando,Canelones,Uruguay.
Public Health Nutr. 2018 Jan;21(1):49-57. doi: 10.1017/S1368980017001185. Epub 2017 Jul 18.
The aim of the present work was to evaluate the influence of two front-of-pack nutrition information schemes (traffic-light system and Chilean warning system) on consumer purchase of ultra-processed foods in a simulated online grocery store.
Following a between-subjects design, participants completed a simulated weekly food purchase in an online grocery store under one of three experimental conditions: (i) a control condition with no nutrition information, (ii) a traffic-light system and (iii) the Chilean warning system. Information about energy (calories), sugar, saturated fats and salt content was included in the nutrition information schemes.
Participants were recruited from a consumer database and a Facebook advertisement.
People from Montevideo (Uruguay), aged 18-77 years (n 437; 75 % female), participated in the study. All participants were in charge of food purchase in the household, at least occasionally.
No significant differences between experimental conditions were found in the mean share of ultra-processed foods purchased by participants, both in terms of number of products and expenditure, or in the mean energy, sugar, saturated fat and salt content of the purchased items. However, the Chilean warning system decreased intended purchase of sweets and desserts.
Results from this online simulation provided little evidence to suggest that the traffic-light system or the Chilean warning system in isolation could be effective in reducing purchase of ultra-processed foods or improving the nutritional composition of the purchased products.
本研究旨在评估两种食品标签方案（信号灯系统和智利警示系统）对模拟在线杂货店中超加工食品购买行为的影响。
采用组间设计，参与者在三种实验条件下完成模拟的每周在线杂货店食品购买任务：（i）无营养信息的对照条件；（ii）信号灯系统；（iii）智利警示系统。营养信息标签方案中包含了能量（卡路里）、糖、饱和脂肪和盐含量的信息。
参与者通过消费者数据库和 Facebook 广告招募而来。
437 名年龄在 18-77 岁的蒙得维的亚（乌拉圭）居民参与了这项研究，其中 75%为女性。所有参与者至少偶尔负责家庭食品采购。
无论从购买产品数量还是支出方面，参与者购买的超加工食品份额，以及购买产品的平均能量、糖、饱和脂肪和盐含量，在实验条件之间均无显著差异。然而，智利警示系统减少了购买甜食和甜点的意愿。
本在线模拟研究结果表明，信号灯系统或智利警示系统单独使用，可能无法有效减少超加工食品的购买或改善购买产品的营养成分。
