Epidemiology and Community Health, University of Minnesota - Twin Cities, 1300 South 2nd Street - Suite 300, Minneapolis, MN 55454, USA.
Public Health Nutr. 2012 Feb;15(2):189-97. doi: 10.1017/S1368980011001303. Epub 2011 Jul 7.
Nutrition label use could help consumers eat healthfully. Despite consumers reporting label use, diets are not very healthful and obesity rates continue to rise. The present study investigated whether self-reported label use matches objectively measured label viewing by monitoring the gaze of individuals viewing labels.
The present study monitored adults viewing sixty-four food items on a computer equipped with an eye-tracking camera as they made simulated food purchasing decisions. ANOVA and t tests were used to compare label viewing across various subgroups (e.g. normal weight v. overweight v. obese; married v. unmarried) and also across various types of foods (e.g. snacks v. fruits and vegetables).
Participants came to the University of Minnesota's Epidemiology Clinical Research Center in spring 2010.
The 203 participants were ≥18 years old and capable of reading English words on a computer 76 cm (30 in) away.
Participants looked longer at labels for 'meal' items like pizza, soup and yoghurt compared with fruits and vegetables, snack items like crackers and nuts, and dessert items like ice cream and cookies. Participants spent longer looking at labels for foods they decided to purchase compared with foods they decided not to purchase. There were few between-group differences in nutrition label viewing across sex, race, age, BMI, marital status, income or educational attainment.
Nutrition label viewing is related to food purchasing, and labels are viewed more when a food's healthfulness is ambiguous. Objectively measuring nutrition label viewing provides new insight into label use by various sociodemographic groups.
营养标签的使用可以帮助消费者健康饮食。尽管消费者报告称他们会使用标签，但饮食并不健康，肥胖率仍在继续上升。本研究通过监测个体查看标签时的目光，调查了自我报告的标签使用是否与客观测量的标签查看相匹配。
本研究通过使用眼动追踪摄像机监测成年人在电脑上模拟购买食物时对 64 种食物的注视，来监测他们的标签查看情况。使用方差分析和 t 检验比较了不同亚组（例如，正常体重组、超重组、肥胖组；已婚组、未婚组）以及不同类型的食物（例如，零食、水果和蔬菜）之间的标签查看情况。
参与者于 2010 年春季来到明尼苏达大学流行病学临床研究中心。
203 名参与者年龄均≥18 岁，且能够在距离电脑 76 厘米（30 英寸）的距离阅读英文单词。
与水果和蔬菜、饼干和坚果等零食以及冰淇淋和饼干等甜点相比，参与者会更长时间地注视披萨、汤和酸奶等“餐食”类食物的标签。与参与者决定购买的食物相比，他们会花更长时间看自己决定不购买的食物的标签。在性别、种族、年龄、BMI、婚姻状况、收入或教育程度等方面，营养标签查看方面的组间差异很小。
营养标签查看与食物购买有关，当一种食物的健康性不明确时，标签会被更多地查看。客观测量营养标签查看为各种社会人口统计学群体的标签使用提供了新的见解。
