Bangia Deepika, Shaffner Donald W, Palmer-Keenan Debra M
Public Health Solutions, New York, NY.
Department of Food Science, Rutgers, The State University of New Jersey, New Brunswick, NJ.
J Nutr Educ Behav. 2017 Jun;49(6):475-480.e1. doi: 10.1016/j.jneb.2017.02.008. Epub 2017 Apr 1.
To assess the impacts associated with a grocery store tour point-of-purchase intervention using podcasts about omega-3 fatty acid (n-3)-rich food items.
A repeated-measures secondary data analysis of food purchase records obtained from a convenience sample of shoppers' loyalty cards.
Shoppers (n = 251) who had listened to podcasts regarding n-3-rich foods while shopping.
MAIN OUTCOME MEASURE(S): The number of omega-3-rich food purchases made according to food or food category by participants determined via spreadsheets obtained from grocery store chain.
Descriptive statistics were performed on demographic characteristics. Wilcoxon signed-rank tests were used to assess whether food purchases increased from 6 months before to 6 months after intervention. Correlations assessed the relationship between intentions to purchase n-3-rich foods expressed on the intervention day with actual long-term n-3-rich food purchases. Nonparametric Kruskal-Wallis ANOVAs and Wilcoxon signed-rank tests were used to analyze differences between changes made and demographic variables (ie, participants' gender, race, and education levels).
Most shoppers (59%) increased n-3-rich food purchases, with significant mean purchase changes (t[172] = -6.9; P < .001; pre = 0.2 ± 0.7; post = 3.6 ± 5.1).
Podcasts are promising nutrition education tools. Longer studies could assess whether lasting change results from podcast use.
评估使用关于富含ω-3脂肪酸（n-3）食品的播客进行杂货店巡回购买点干预所产生的影响。
对从购物者忠诚卡便利样本中获得的食品购买记录进行重复测量二次数据分析。
在购物时收听了关于富含n-3食品播客的购物者（n = 251）。
通过从连锁杂货店获得的电子表格确定参与者按食品或食品类别购买的富含ω-3食品的数量。
对人口统计学特征进行描述性统计。使用Wilcoxon符号秩检验评估干预前6个月到干预后6个月食品购买量是否增加。相关性评估干预当天表达的购买富含n-3食品的意图与实际长期购买富含n-3食品之间 的关系。使用非参数Kruskal-Wallis方差分析和Wilcoxon符号秩检验分析变化与人口统计学变量（即参与者的性别、种族和教育水平）之间的差异。
大多数购物者（59%）增加了富含n-3食品的购买量，平均购买量有显著变化（t[172] = -6.9；P <.001；干预前 = 0.2 ± 0.7；干预后 = 3.6 ± 5.1）。
播客是很有前景的营养教育工具。更长时间的研究可以评估使用播客是否会带来持久的改变。
