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Systematic Review

Efficiency of In-Store Interventions to Impact Customers to Purchase Healthier Food and Beverage Products in Real-Life Grocery Stores: A Systematic Review and Meta-Analysis

1
Department of Behavioral Sciences, Oslo Metropolitan University, P.O. BOX 4 St., Olavs plass, N-0130 Oslo, Norway
2
GreeNudge, Tordenskioldsgate 2, N-0160 Oslo, Norway
3
Consumption Research Norway, Oslo Metropolitan University, P.O. BOX 4 St., Olavs plass, N-0130 Oslo, Norway
4
Morbid Obesity Centre, Vestfold Hospital Trust, Halfdan Wilhelmsens allé 17, 3116 Tønsberg, Norway
*
Author to whom correspondence should be addressed.
Academic Editor: Cristina Calvo-Porral
Foods 2021, 10(5), 922; https://doi.org/10.3390/foods10050922
Received: 30 March 2021 / Revised: 19 April 2021 / Accepted: 19 April 2021 / Published: 22 April 2021
(This article belongs to the Special Issue Consumer Behavior and Food Choice)
Grocery stores are important settings to promote healthier food and beverage choices. The present paper aims at reviewing the effectiveness of different types of in-store interventions and how they impact sales of different product category in real grocery stores. Systematic search was conducted in six databases. In-store interventions were categorized according to the framework by Kraak et al. (2017) into one or more of eight interventions (e.g., place, profile, portion, pricing, promotion, healthy default picks, prompting and proximity). This systematic theme-based review follows the preferred reporting items for systematic reviews and meta-analyses (PRISMA) data screening and selection. Thirty-six studies were included in the qualitative synthesis and 30 studies were included in the meta-analysis, representing 72 combinations of in-store interventions. The analysis demonstrates that interventions overall had small significant effect size (ES) using Cohen’s d on food purchase behavior (d = 0.17, 95% CI [0.04, 0.09]), with largest ES for pricing (d = 0.21) and targeting fruits and vegetables (d = 0.28). Analysis of ES of in-store interventions show that pricing, and pricing combined with promotion and prompting, effectively impacted purchase behavior. Interventions significantly impacted both sales of healthy and unhealthy products and significantly increased sales of fruits and vegetables, healthy beverage and total volume of healthy products. Results should however be interpreted with some caution, given the relatively low quality of overall evidence and low number of studies and observations for some types of intervention. Further research exploring impact on different in-store interventions and targeting especially unhealthy products are needed. View Full-Text
Keywords: consumer behavior; healthy and nutritional food choices; food choice motivations; choice architecture; nudging; food environment; interventions; obesity; systematic review consumer behavior; healthy and nutritional food choices; food choice motivations; choice architecture; nudging; food environment; interventions; obesity; systematic review
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MDPI and ACS Style

Slapø, H.; Schjøll, A.; Strømgren, B.; Sandaker, I.; Lekhal, S. Efficiency of In-Store Interventions to Impact Customers to Purchase Healthier Food and Beverage Products in Real-Life Grocery Stores: A Systematic Review and Meta-Analysis. Foods 2021, 10, 922. https://doi.org/10.3390/foods10050922

AMA Style

Slapø H, Schjøll A, Strømgren B, Sandaker I, Lekhal S. Efficiency of In-Store Interventions to Impact Customers to Purchase Healthier Food and Beverage Products in Real-Life Grocery Stores: A Systematic Review and Meta-Analysis. Foods. 2021; 10(5):922. https://doi.org/10.3390/foods10050922

Chicago/Turabian Style

Slapø, Helena, Alexander Schjøll, Børge Strømgren, Ingunn Sandaker, and Samira Lekhal. 2021. "Efficiency of In-Store Interventions to Impact Customers to Purchase Healthier Food and Beverage Products in Real-Life Grocery Stores: A Systematic Review and Meta-Analysis" Foods 10, no. 5: 922. https://doi.org/10.3390/foods10050922

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