Seward M W, Block J P, Chatterjee A
Division of Chronic Disease Research Across the Lifecourse, Department of Population Medicine Harvard Medical School and Harvard Pilgrim Health Care Institute Boston USA.
Division of Global Health Equity Brigham and Women's Hospital, Harvard Medical School Boston USA.
Obes Sci Pract. 2018 Mar 14;4(2):159-177. doi: 10.1002/osp4.159. eCollection 2018 Apr.
To assess student perceptions of traffic-light labels (TLLs) in college cafeterias.
Cross-sectional, mixed-methods study.
One northeastern US college.
A total of 1,294 survey respondents; 57 focus group participants.
Seven-week traffic-light labelling (green = 'nutrient-rich', yellow = 'less nutrient-rich', red = 'more nutrient-rich choice in green or yellow') intervention at two college cafeterias.
Perceptions of TLLs and food labelling; disordered eating behaviours.
Performed χ analyses to test for differences between pre-intervention and postintervention responses, and between postintervention subgroups stratified by site, gender, weight status and varsity athlete status. Qualitative analysis based on the immersion-crystallization method.
In postintervention surveys, 60% found TLLs helpful, and 57% used them a few times a week. When asked whether TLLs increased risk of developing eating disorders, 16% of participants said they did and 47% said TLLs might exacerbate existing eating disorders. In focus groups, some students thought the red 'colour seemed jarring', but the vast majority agreed 'the more nutrition information available, the better'.
Students generally supported TLLs, but future college-based interventions should address eating disorder concerns. Labels that incorporate nutrition information and education, and avoid negative messaging or judgment of what students eat, may be more acceptable.
评估大学生对学校食堂交通信号灯标签（TLLs）的看法。
横断面混合方法研究。
美国东北部一所大学。
共1294名调查受访者；57名焦点小组参与者。
在两所大学食堂进行为期七周的交通信号灯标签干预（绿色 = “营养丰富”，黄色 = “营养不太丰富”，红色 = “绿色或黄色选项中营养更丰富的选择”）。
对TLLs和食品标签的看法；饮食失调行为。
进行χ分析以测试干预前和干预后反应之间以及按地点、性别、体重状况和大学运动员身份分层的干预后亚组之间的差异。基于沉浸 - 结晶法进行定性分析。
在干预后的调查中，60%的人认为TLLs有帮助，57%的人每周使用几次。当被问及TLLs是否会增加饮食失调的风险时，16%的参与者表示会，47%的人表示TLLs可能会加剧现有的饮食失调。在焦点小组中，一些学生认为红色“看起来很刺眼”，但绝大多数人同意“营养信息越多越好”。
学生普遍支持TLLs，但未来基于大学的干预措施应解决饮食失调问题。包含营养信息和教育且避免对学生饮食进行负面信息或评判的标签可能更容易被接受。
