Multi-level Supermarket Discount Study

NCT04178824 | Completed Results

• 2 other identifiers: GCO 16-1050R01DK105440
• Study Type: interventional
• Target: 167
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Obesity

Keywords

Nutrition

Outcome Measures

Primary Outcomes (6)

• Fruit Intake as Assessed by 24-h Dietary Recalls

  Individual consumption behaviors: Fruit intake as assessed by 24-h dietary recalls

  Week 8, 24, 40, 56

• Vegetable Intake as Assessed by 24-h Dietary Recalls

  Individual consumption behaviors: Vegetable intake as assessed by 24-h dietary recalls

  Week 8, 24, 40, 56

• Bottled Water Intake as Assessed by 24-h Dietary Recalls

  Individual consumption behaviors: bottled water intake as assessed by 24-h dietary recalls

  Week 8, 24, 40, 56

• Seltzer Water Intake as Assessed by 24-h Dietary Recalls

  Individual consumption behaviors: seltzer water intake as assessed by 24-h dietary recalls

  Week 8, 24, 40, 56

• Diet Soda Intake as Assessed by 24-h Dietary Recalls

  Individual consumption behaviors: diet soda intake as assessed by 24-h dietary recalls

  Week 8, 24, 40, 56

• Total Non-caloric Beverage Intake as Assessed by 24-h Dietary Recalls

  Individual consumption behaviors: Total non-caloric beverage intake as assessed by 24-h dietary recalls

  Week 8, 24, 40, 56

Secondary Outcomes (8)

• Body Weight

  Week 0, 8, 24, 40, 56

• Body Mass Index (BMI)

  Week 0, 8, 24, 40, 56

• Percent Body Fat

  Week 0, 8, 24, 40, 56

• Waist Circumference

  Week 0, 8, 24, 40, 56

• Fasting Glucose

  Week 0, 8, 24, 40, 56

Study Arms (3)

Experimental 15% discount intervention

EXPERIMENTAL

15% discount on fruits, vegetables and non-caloric beverages at the designated supermarkets

Behavioral: Discount Intervention

Experimental 30% discount intervention

EXPERIMENTAL

30% discount on fruits, vegetables and non-caloric beverages at the designated supermarkets

Behavioral: Discount Intervention

No intervention control group

NO INTERVENTION

0% discount on fruits, vegetables and non-caloric beverages at the designated supermarkets

Interventions

Discount Intervention BEHAVIORAL

15% or 30% discount on fruits and vegetables

Experimental 15% discount intervention; Experimental 30% discount intervention

Eligibility Criteria

• Age: 18 Years - 70 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• 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

You may not qualify if:

• 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

Sponsors & Collaborators

• Icahn School of Medicine at Mount Sinai: lead
• National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK): collaborator

Study Sites (1)

Mount Sinai St. Luke's

New York, New York, 10025, United States

Location

Related Publications (4)

• Poskute AS, Nzesi A, Geliebter A. Changes in food intake during the COVID-19 pandemic in New York City. Appetite. 2021 Aug 1;163:105191. doi: 10.1016/j.appet.2021.105191. Epub 2021 Mar 3.

  PMID: 33667497 RESULT

• Nzesi A, Roychowdhury L, De Jesus ML, Brown A, Geliebter A. Body weight, dietary intake, and health risk factors pre-COVID and during the COVID-19 pandemic. Appetite. 2022 Nov 1;178:106182. doi: 10.1016/j.appet.2022.106182. Epub 2022 Aug 6.

  PMID: 35940334 RESULT

• Nzesi A, Owusu B, Barry J, Sandhu M, Geliebter A. Impact of a randomized controlled trial of discounts on fruits, vegetables, and noncaloric beverages in NYC supermarkets on food intake and health risk factors. PLoS One. 2023 Nov 22;18(11):e0291770. doi: 10.1371/journal.pone.0291770. eCollection 2023.

  PMID: 37992046 RESULT

• Poskute AS, Ang IYH, Rahman N, Geliebter A. Effects of discounting fruits, vegetables, and noncaloric beverages in New York City supermarkets on purchasing, intake, and weight. Obesity (Silver Spring). 2024 Jul;32(7):1290-1301. doi: 10.1002/oby.24058.

  PMID: 38932711 RESULT

MeSH Terms

Conditions

Obesity

Condition Hierarchy (Ancestors)

Overweight; Overnutrition; Nutrition Disorders; Nutritional and Metabolic Diseases; Body Weight; Signs and Symptoms; Pathological Conditions, Signs and Symptoms

Results Point of Contact

• Title: Allan Geliebter PhD
• Organization: Icahn School of Medicine at Mount Sinai

Allan.Geliebter@mountsinai.org

212-523-4574

Study Officials

• Allan Geliebter, PhD

  Icahn School of Medicine at Mount Sinai

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Professor, Department of Psychiatry

Study Record Dates

• First Submitted: November 22, 2019
• First Posted: November 26, 2019
• Study Start: September 1, 2016
• Primary Completion: November 15, 2022
• Study Completion: November 15, 2022
• Last Updated: October 2, 2024
• Results First Posted: September 19, 2024

Record last verified: 2024-09

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL, CSR
• Time Frame: Data should become available 12/23
• Access Criteria: Can be requested of the PI by other investigators.

Locations

US (1)