Public Health Research Division, RTI International, Research Triangle Park, NC.
Economic Research Service, US Department of Agriculture, Washington, DC.
J Nutr Educ Behav. 2020 Sep;52(9):850-858. doi: 10.1016/j.jneb.2020.04.003. Epub 2020 May 28.
To examine the impact front-of-package nutrition labels (FOPLs) have on decision-making abilities among low-income parents in a virtual supermarket.
A 4-by-2 experimental design with 3 FOPLs (summary, nutrient-specific, hybrid) and a no-FOPL comparison. Within the FOPL condition, participants either shopped with a time limit (10 minutes) or with no time limit.
A web-based, 3-dimensional virtual supermarket.
Parents (n = 1,452) from low-income households with at least 1 child aged 4-12 years.
Index derived from the United Kingdom's Nutrient Profiling Model that summarized the overall nutrient profile of the participant's shopping basket.
Analysis of covariance with post hoc estimations (pairwise) of condition means adjusted for multiple comparisons.
All FOPLs led to healthier nutrient profiles than the no-FOPL condition (P < .001). Simple FOPLs (ie, summary, hybrid) led to healthier nutrient profiles than nutrient-specific FOPLs (P = .02 and P < .001, respectively). Among parents exposed to simple FOPLs, those under time pressure made less healthy choices than those who were not under time pressure (P = .05 and P = .03, respectively). Time pressure did not affect parents exposed to nutrient-specific FOPLs (P = .69).
Front-of-package nutrition labels can aid parents in selecting healthier products. Simple FOPLs provide greater utility for selecting healthier products than FOPLs that present an array of nutrient information. Time pressure can influence how parents interact with different types of label information.
在虚拟超市环境中，考察简易包装营养标签（FOPLs）对低收入家长决策能力的影响。
采用 4×2 实验设计，有 3 种 FOPLs（汇总型、营养成分型、混合型）和一种无 FOPLs 比较。在 FOPL 条件下，参与者要么限时（10 分钟）购物，要么无时间限制购物。
基于网络的三维虚拟超市。
来自低收入家庭、至少有一名 4-12 岁儿童的家长（n=1452）。
源自英国营养成分分析模型的指标，总结参与者购物篮的总体营养成分概况。
协方差分析，对条件均值进行事后估计（两两比较），并进行多次比较调整。
所有 FOPLs 导致的营养成分谱均比无 FOPLs 条件更健康（P<0.001）。简单 FOPLs（即汇总型、混合型）比营养成分型 FOPLs 导致的营养成分谱更健康（P=0.02 和 P<0.001）。在接触简单 FOPLs 的家长中，有时间压力的家长比没有时间压力的家长做出的选择更不健康（P=0.05 和 P=0.03）。时间压力对接触营养成分型 FOPLs 的家长没有影响（P=0.69）。
简易包装营养标签可以帮助家长选择更健康的产品。与提供大量营养信息的 FOPLs 相比，简单 FOPLs 在选择更健康的产品方面更具实用性。时间压力会影响家长与不同类型标签信息的互动方式。
