Cardiovascular diseases
Conditions
Interventions
This cluster-randomised controlled trial will implement nudging and pricing strategies on the supermarket level, using two trial arms:
- control group receiving no intervention
- intervention group receiving healthy food nudges and pricing strategies.
An mHealth PA coaching app will be implemented and randomised at the individual level across all supermarket level clusters
- an intervention group receiving the step count app plus the PA coaching app.
Sponsors
The SUPREME NUDGE project is carried out by a consortium, coordinated by Amsterdam UMC (Formerly VU University Medical Center).
Eligibility
Inclusion criteria
Inclusion criteria: Potential participants have to meet all of the following criteria in order to be eligible for study inclusion: - Living in the low SEP neighbourhood surrounding the selected store; - Aged 30-80 years; - Self-report to do (or report their partner does) more than half of the household grocery shopping at the selected supermarket and are planning on continuing visiting for the next year; - Provide written informed consent. In order to be eligible for additional inclusion in the PA coaching app intervention, a participant must indicate to own a smartphone and use it for text messaging on a regular basis.
Exclusion criteria
Exclusion criteria: Potential participants who are not able to adequately communicate in the Dutch language will be excluded from the study. Those who are unable to climb a flight of stairs or have a contra-indication to engage in light PA will be excluded from the mobile PA app intervention.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in adherence to the Dutch Dietary Guidelines (i.e, DHD15-index) over 6 or 12 months compared with the control supermarkets. | — |
Secondary
| Measure | Time frame |
|---|---|
| Cardiometabolic outcomes (i.e., HbA1c, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, total cholesterol, total cholesterol/HDL-ratio, triglycerides and waist circumference), along with walking behaviours (i.e., step count) to evaluate effects of the mobile PA app, and intermediate behavioural factors including changes in food purchasing in the supermarket, food decision styles, social cognitive factors in relation to nudges and walking behaviours, customer satisfaction over 6 or 12 months, and acceptance of nudges and technology at 6 or 12 months, all compared with the control arm. In addition the reflexive monitoring will result in a strategic roadmap identifying systemic barriers and facilitators, as well as strategies to overcome identified barriers for future supermarket-based health interventions. | — |
Contacts
Public ContactJoreintje Mackenbach
Department of Epidemiology and Data Science
Outcome results
None listed