Study Title
Equity Effects of Dietary Nudging Field Experiments: Systematic Review
Principal Investigator
Benjamin Schüz, Hannah Meyerhof, Lisa Karla Hilz, Jutta Mata
Affiliation
Faculty 11, Institute of Public Health and Nursing Research, University of Bremen, Germany; Department of Psychology, University of Mannheim, Germany
Start Date
Not specified
End Date
Not specified
Study Objective
This systematic review assesses the equity effects of dietary nudging interventions in real-world field settings, aiming to identify whether these interventions work equally across various socioeconomic and demographic groups.
Short Abstract
This review focuses on dietary nudging interventions in real-world field experiments to understand how they affect individuals of different socioeconomic statuses. The findings suggest that while some nudging interventions, particularly those focused on cognitive strategies, show differential effects depending on socioeconomic factors, other strategies, like behaviorally oriented nudges, were more effective in disadvantaged groups.
Study Design
Systematic review of field experiments on dietary nudging, using the PROGRESS-Plus framework to examine equity effects across socioeconomic and demographic dimensions.
Population
Adult populations across various socioeconomic and demographic groups
Sample Size
19 studies from 18 articles, with 46 equity comparisons
Inclusion Criteria
Studies that employed nudging interventions (cognitive, affective, or behavioral), were conducted in field settings, reported observable dietary behavior indicators, included a control group, and stratified effect sizes by indicators of socioeconomic status.
Exclusion Criteria
Studies conducted in controlled or laboratory settings, those not reporting effect sizes stratified by PROGRESS-Plus dimensions
Intervention/Exposure
Cognitive nudges (e.g., nutritional labeling), affective nudges (e.g., health calls), and behavioral nudges (e.g., convenience enhancement)
Outcome Measures
Changes in food selection and consumption behaviors, stratified by PROGRESS-Plus indicators (e.g., income, education, ethnicity)
Funding Source
Not specified
Collaborating Institutions
University of Bremen, University of Mannheim
Ethics Approval
Not specified (systematic review)
Publication Status
Published in Frontiers in Public Health, July 23, 2021 DOI: 10.3389/fpubh.2021.668998
Keywords
Dietary nudging, equity effects, field experiments, socioeconomic status, nutritional behavior, health inequalities
Data Collection Methods
Systematic literature review, meta-analysis
Primary Data Availability
Not applicable
Contact Information
Benjamin Schüz (