Multi-level Supermarket Discount Study (NCT04178824) | Clinical Trial Compass
CompletedNot Applicable
Multi-level Supermarket Discount Study
United States167 participantsStarted 2016-09-01
Plain-language summary
The study team's objective is to test the effect of supermarket discount levels on fruit and vegetable (F\&V) and non-caloric beverage purchasing and consumption, as well as health outcomes. The study team will implement this economic intervention in a local supermarket chain to assess the effects of a 32-week intervention of fruit and vegetable (F\&V) and non-caloric beverage discounts of 30%, 15%, and 0% (control group) on purchasing, dietary intake, and health outcomes, including body weight and composition, blood pressure, and biochemical markers of cardiovascular disease risk. The 32-week intervention will be preceded by an 8-week baseline and will have a follow-up period of 16 weeks. There will be no discounts in effect during the baseline and follow-up periods.
Who can participate
Age range
18 Years – 70 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* BMI: 24.5 - 50
* Weight Stable (±5% body weight in last 3 mo)
* Accessible by telephone
* Living in NYC and not planning move
* Primary household food shopper
* ≥50% of food shopping at Foodtown/Brooklyn Harvest and agrees to 100% shopping at store during study
* Consumption of \>50% of food shopping
* Eat out or take out ≤5 times weekly
Exclusion Criteria:
* Pregnant or contemplating pregnancy
* Enrolled in related studies
* Active weight loss program
* Presence of serious medical (e.g. cancer, diabetes) or psychiatric disease (e.g. bipolar)
* Changes in medications or smoking in past 3 mo
* Excessive alcohol use (≥4 drinks/day) or illicit drug use
* Planning a vacation ≥ 4 consecutive weeks or 6 total weeks during study
* Receiving SNAP benefits
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Fruit Intake as Assessed by 24-h Dietary Recalls
Timeframe: Week 8, 24, 40, 56
2
Vegetable Intake as Assessed by 24-h Dietary Recalls
Timeframe: Week 8, 24, 40, 56
3
Bottled Water Intake as Assessed by 24-h Dietary Recalls
Timeframe: Week 8, 24, 40, 56
4
Seltzer Water Intake as Assessed by 24-h Dietary Recalls
Timeframe: Week 8, 24, 40, 56
5
Diet Soda Intake as Assessed by 24-h Dietary Recalls
Timeframe: Week 8, 24, 40, 56
6
Total Non-caloric Beverage Intake as Assessed by 24-h Dietary Recalls