Abstract
Objective
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.
Design
A repeated-measures secondary data analysis of food purchase records obtained from
a convenience sample of shoppers’ loyalty cards.
Participants
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.
Analysis
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).
Results
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).
Conclusions and Implications
Podcasts are promising nutrition education tools. Longer studies could assess whether
lasting change results from podcast use.
Key Words
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Article info
Publication history
Published online: April 01, 2017
Accepted:
February 28,
2017
Footnotes
Conflict of Interest Disclosures: The authors' conflict of interest disclosures can be found online with this article on www.jneb.org.
Identification
Copyright
©2017 Society for Nutrition Education and Behavior. Published by Elsevier, Inc. All rights reserved.
