Trial reportJournal of nutrition education and behavior2018
A Supermarket Double-Dollar Incentive Program Increases Purchases of Fresh Fruits and Vegetables Among Low-Income Families With Children: The Healthy Double Study.
Trial report in Journal of nutrition education and behavior, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT05028205 (Eating Better Together), which is not on this map. Cited by 49 papers, 9 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Eating Better Together: A Pilot Study
Who cites it
49 citing papers in PubMed, 9 syntheses or guidelines pooled it, 89 citations in OpenAlex.
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2024Pooled it
- Evaluation of Economic and Health Outcomes Associated With Food Taxes and Subsidies: A Systematic Review and Meta-analysis.JAMA network open · 2022Pooled it
- A systematic review of supermarket automated electronic sales data for population dietary surveillance.Nutrition reviews · 2022Pooled it
- The impact of the consumer and neighbourhood food environment on dietary intake and obesity-related outcomes: A systematic review of causal impact studies.Social science & medicine (1982) · 2022Pooled it
- Equity Effects of Dietary Nudging Field Experiments: Systematic Review.Frontiers in public health · 2021Pooled it
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2020Pooled it
- A Systematic Review of the Effect of Retail Food Environment Interventions on Diet and Health with a Focus on the Enabling Role of Public Policies.Current nutrition reports · 2019Pooled it
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2019Pooled it
- Interventions for increasing fruit and vegetable consumption in children aged five years and under.The Cochrane database of systematic reviews · 2018Pooled it
- Trial
- Participant Characteristics Associated with High Responsiveness to Personalized Healthy Food Incentives: a Secondary Analysis of the Randomized Controlled Crossover Smart Cart Study.The Journal of nutrition · 2023Trial
- Effect of Personalized Incentives on Dietary Quality of Groceries Purchased: A Randomized Crossover Trial.JAMA network open · 2021Trial
- Using fundraising incentives and point-of-purchase nutrition promotion to improve food choices among school families in restaurants: a pilot and feasibility study.Public health nutrition · 2020Trial
- Effects Of Alternative Food Voucher Delivery Strategies On Nutrition Among Low-Income Adults.Health affairs (Project Hope) · 2019Trial
- Make It Fresh, for Less! A Supermarket Meal Bundling and Electronic Reminder Intervention to Promote Healthy Purchases Among Families With Children.Journal of nutrition education and behavior · 2019Trial
- Traffic-light labels and financial incentives to reduce sugar-sweetened beverage purchases by low-income Latino families: a randomized controlled trial.Public health nutrition · 2018Trial
- Impacts of incentivizing milk spending among SNAP participants.Health affairs scholar · 2026Article
- Frozen Fruit and Vegetable Perceptions and Usage among a Multistate Sample of Supplemental Nutrition Assistance Program Education and Expanded Food and Nutrition Education Program Participants.Current developments in nutrition · 2026Article
- Supermarket Loyalty Card Data for Delivering and Evaluating Dietary Interventions: A Narrative Review.International journal of population data science · 2026Review
- Exploring Facilitators and Barriers for Personalized Dietary Incentives Among Online Shoppers at Cardiovascular Risk and Key Informants to Inform an Automated Shopping Platform.Journal of nutrition education and behavior · 2025Article
Corrections and comments
- Erratum issuedCorrigendum.2020
Authors and funding
9 authors at 3 institutions in 1 country.
Funding
Abstract
objectiveTo carry out a pilot study to determine whether a supermarket double-dollar fruit and vegetable (F&V) incentive increases F&V purchases among low-income families.
designRandomized controlled design. Purchases were tracked using a loyalty card that provided participants with a 5% discount on all purchases during a 3-month baseline period followed by the 4-month intervention.
settingA supermarket in a low-income rural Maine community.
participantsA total of 401 low-income and Supplemental Nutrition Assistance Program (SNAP) supermarket customers.
interventionSame-day coupon at checkout for half-off eligible fresh, frozen, or canned F&V over 4 months.
main outcome measureWeekly spending in dollars on eligible F&V. ANALYSIS: A linear model with random intercepts accounted for repeated transactions by individuals to estimate change in F&V spending per week from baseline to intervention. Secondary analyses examined changes among SNAP-eligible participants.
resultsCoupons were redeemed among 53% of eligible baskets. Total weekly F&V spending increased in the intervention arm compared with control ($1.83; 95% confidence interval [CI], $0.29 to $3.88). The largest increase was for fresh F&V ($1.97; 95% CI, $0.49 to $3.44). Secondary analyses revealed greater increases in F&V spending among SNAP-eligible participants who redeemed coupons ($5.14; 95% CI, $1.93 to $8.34) than among non-SNAP eligible participants who redeemed coupons ($3.88; 95% CI, $1.67 to $6.08). CONCLUSIONS AND IMPLICATIONS: A double-dollar pricing incentive increased F&V spending in a low-income community despite the moderate uptake of the coupon redemption. Customers who were eligible for SNAP saw the greatest F&V spending increases. Financial incentives for F&V are an effective strategy for food assistance programs to increase healthy purchases and improve dietary intake in low-income families.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.