Study name, Country | Study design | Setting | Sample (store & participants) | Intervention description | References |
---|---|---|---|---|---|
SHELf Australia | RCT | Second largest national supermarket chain | 2 stores 574 women | Four study conditions: 1) 20% price-reduction on fruit, vegetables, water and low-calorie beverages 2) Tailored skills-based behaviour-change intervention 3) Combined skill-building and price-reduction 4) Control group Intervention duration: 3 months | Ball et al., 2011, BMC PH Ball et al., 2015, AJCN Olstad et al., 2016, IJBNPA Le et al., 2016, SSM |
Healthy Checkout Counter studies The Netherlands | Quasi experimental design (3 experiments) | Largest national supermarket chain | Three study components: 1) 24 stores (15 intervention, 9 control) 2) 2 stores 3) 1 store | Three study components: 1) Increased availability and prominent positioning (check-out counter) of healthier snacks 2) Increased availability and prominent positioning (check-out counter) of healthier snacks in combination with pricing strategies 3) Removal of unhealthy products at check-out counter and replaced with healthier products Intervention duration: 2 months | Huitink et al., 2020, BMC Public Health Huitink et al., 2020, Int. J. Environ. Res. Public Health |
Healthy Supermarket Coach studies The Netherlands | Quasi experimental design (2 experiments) | Largest national supermarket chain | 4 supermarkets (3 intervention, 1 control) and 4 schools (3 intervention, 1 control) | Study conditions: 1) Peer education workshop for adolescents by supermarket staff 2) Control group Intervention duration: 1 week | Huitink et al., 2021, Health Educ Behav |
Social norm nudges in supermarket trolleys The Netherlands | Quasi experimental design | Largest national supermarket chain | 1 store | Intervention component: 1) Shopping trolley placemat with a social norm message about vegetable purchases and a designated place to put vegetables Intervention duration: 1 weekend day | Huitink et al., 2020, Appetite |
Supreme Nudge The Netherlands | Parallel cluster-RCT | National (cooperative) supermarket chain | 12 stores (6 intervention, 6 control) ~ 400 adults aged 30–80 years | Study conditions: 1) Nudging (prominent positioning, labelling, healthy check-outs, healthy baskets, healthy end-of-isles 2) Pricing (decreased prices of healthy foods and increased prices of unhealthy foods) strategies 3) Control group Intervention duration: 12 months | Lakerveld et al., 2018, BMC Public Health Stuber et al., 2020 Nutrition Journal Middel et al., 2021 IJHPM Stuber et al., 2022 Nutrition Journal |
WRAPPED (pilot) UK | Prospective matched controlled cluster design | National discount supermarket chain | 6 stores (3 intervention, 3 control) 150 women aged 18–45 years | Study conditions: 1) Removal of unhealthy products from checkouts and aisle-ends opposite and replaced with non-food items and water 2) Increased availability and prominent positioning of fruit and vegetables 3) Control group Intervention duration: 6 months | Vogel et al., 2021, Plos Med Shand et al., 2021, SSM Dhuria et al., 2021, BMC PH |
WRAPPED (full scale) UK | Prospective matched controlled cluster design | National discount supermarket chain | 36 stores (18 intervention, 18 control) 1620 women aged 18–60 years | Study conditions: 1) Increased availability and prominent positioning (front of store) of fresh fruit and vegetables section 2) Control group Intervention duration: 6 months | Vogel et al., 2020, BMJ Open Muir et al., 2023, BMC Medicine |