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Can Healthy Checkout Counters Improve Food Purchases? Two Real-Life Experiments in Dutch Supermarkets

Author

Listed:
  • Marlijn Huitink

    (Department of Health Science, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands)

  • Maartje P. Poelman

    (Chair Group Consumption and Healthy Lifestyles, Wageningen University & Research, Hollandseweg 1, 6706 KN Wageningen, The Netherlands)

  • Jacob C. Seidell

    (Department of Health Science, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands)

  • Lothar D. J. Kuijper

    (Department of Health Science, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands)

  • Trynke Hoekstsra

    (Department of Health Science, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands)

  • Coosje Dijkstra

    (Department of Health Science, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research Institute, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands)

Abstract

Most snacks displayed at supermarket checkouts do not contribute to a healthy diet. We investigated the effects of introducing healthier snack alternatives at checkouts in supermarkets on purchasing behavior. In Study 1, we investigated the effect of completely substituting less healthy with healthier snacks (one supermarket). In Study 2, we investigated the effect of placing and discounting healthier snacks while the less healthy snacks remain in place (two supermarkets). In both studies, the number of purchased snacks (per 1000 customers) was used as the outcome variable. Results for Study 1 showed that the absolute number of purchased checkout snacks was 2.4 times lower (95% confidence interval (CI): 1.9–2.7) when healthier snacks instead of less healthy snacks were placed at the supermarket checkouts. Results for Study 2 showed that when additional healthier snacks were placed near the checkouts, the absolute number of healthier purchased snacks increased by a factor of 2.1 (95% CI: 1.3–3.3). When additional healthier snacks were placed near the checkouts and discounted, the absolute number of healthier purchased snacks increased by a factor of 2.7 (95% CI: 2.0–3.6), although this was not statistically significant higher than placement only (ratio: 1.1, 95% CI: 0.7–1.9). Purchases of less healthy snacks did not decline, and even slightly increased, during the intervention period (ratio: 1.3, 95% CI: 1.1–1.5). If supermarkets want to promote healthier snack purchases, additional healthier products can be positioned near the checkouts. However, this does not discourages the purchase of less healthy snacks. Therefore, to discourage unhealthy snack purchases at supermarket checkouts, a total substitution of less healthy snacks with healthier alternatives is most effective.

Suggested Citation

  • Marlijn Huitink & Maartje P. Poelman & Jacob C. Seidell & Lothar D. J. Kuijper & Trynke Hoekstsra & Coosje Dijkstra, 2020. "Can Healthy Checkout Counters Improve Food Purchases? Two Real-Life Experiments in Dutch Supermarkets," IJERPH, MDPI, vol. 17(22), pages 1-14, November.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:22:p:8611-:d:447845
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    References listed on IDEAS

    as
    1. Payne, Collin & Niculescu, Mihai, 2018. "Can healthy checkout end-caps improve targeted fruit and vegetable purchases? Evidence from grocery and SNAP participant purchases," Food Policy, Elsevier, vol. 79(C), pages 318-323.
    2. repec:bla:devpol:v:26:y:2008:i:6:p:657-692 is not listed on IDEAS
    3. Gopalkrishnan R. Iyer & Markus Blut & Sarah Hong Xiao & Dhruv Grewal, 2020. "Impulse buying: a meta-analytic review," Journal of the Academy of Marketing Science, Springer, vol. 48(3), pages 384-404, May.
    4. Katrine T Ejlerskov & Stephen J Sharp & Martine Stead & Ashley J Adamson & Martin White & Jean Adams, 2018. "Supermarket policies on less-healthy food at checkouts: Natural experimental evaluation using interrupted time series analyses of purchases," PLOS Medicine, Public Library of Science, vol. 15(12), pages 1-20, December.
    Full references (including those not matched with items on IDEAS)

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