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Encouraging Healthy Food Shopping and Eating Behaviors by Price Reduction: A Community Supermarket Study

This study has been completed.
Sponsor:
Collaborators:
Robert Wood Johnson Foundation
Columbia University
Information provided by (Responsible Party):
Dr. Allan Geliebter, New York Obesity and Nutrition Research Center
ClinicalTrials.gov Identifier:
NCT01509664
First received: January 3, 2012
Last updated: January 10, 2014
Last verified: January 2014

January 3, 2012
January 10, 2014
August 2006
August 2013   (final data collection date for primary outcome measure)
Gross Weekly Purchasing of Fruits and Vegetables [ Time Frame: week ] [ Designated as safety issue: No ]
Gross weekly purchasing of fruits and vegetables from the discounted items list in $
  • Food purchasing ($) [ Time Frame: 4-week blocks for 16 weeks ] [ Designated as safety issue: No ]
    Purchasing is tracked automatically via store scan cards. Results are measured as the total dollars spent in a 4-week block (a 4-week baseline period, two 4-week blocks comprising the 8-week intervention period, and a 4-week follow-up period).
  • Body weight [ Time Frame: Assessed every 4 weeks for 16 weeks (weeks 0, 4, 8, 12, 16) ] [ Designated as safety issue: No ]
    Body weight is measured in a private area of the supermarket during participant visits every 4 weeks for 16 weeks (4 weeks of baseline period, 8 weeks of intervention period, 4 weeks of follow-up period).
  • Food intake [ Time Frame: Assessed every 4 weeks for 16 weeks (weeks 0, 4, 8, 12, 16) ] [ Designated as safety issue: No ]
    Food intake is assessed via 24-h dietary recalls conducted over the phone by trained research assistants. Calls are made every 4 weeks for 16 weeks (4 weeks of baseline period, 8 weeks of intervention period, 4 weeks of follow-up period).
Complete list of historical versions of study NCT01509664 on ClinicalTrials.gov Archive Site
Not Provided
Body composition [ Time Frame: Assessed every 4 weeks for 16 weeks (weeks 0, 4, 8, 12, 16) ] [ Designated as safety issue: No ]
Body fat and fat-free mass are measured using bio-impedance analysis (BIA) during participant visits to a private area of the supermarket. Visits are every 4 weeks for 16 weeks (4 week baseline period, 8 week intervention period, 4 week follow-up period).
Not Provided
Not Provided
 
Encouraging Healthy Food Shopping and Eating Behaviors by Price Reduction: A Community Supermarket Study
Encouraging Healthy Food Shopping and Eating Behaviors by Price Reduction: A Community Supermarket Study

The investigators plan to test the effect of price reduction of fruits and vegetables and non-caloric beverages on food purchasing, food intake, body weight, and body composition of primarily single adult shoppers. One hundred subjects will be randomized to an experimental or control group for a 4 month period. In the experimental group, there will be an automated 50% reduction in fruits vegetables and non-caloric beverages during the middle 2-month period. The investigators expect to observe significant changes in food shopping and eating behavior during this period, which should lead to body weight and fat loss. Some of these new shopping patterns should persist in the last month of the study even though prices revert.

Not Provided
Interventional
Not Provided
Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Obesity
Behavioral: Discount intervention
50% discount on selected fruits and vegetables at participating supermarket
  • Experimental: Discount intervention
    Receives 50% discount intervention on selected fruits and vegetables at participating supermarket.
    Intervention: Behavioral: Discount intervention
  • No Intervention: Control
    Received no discount at the participating supermarket.
Geliebter A, Ang IY, Bernales-Korins M, Hernandez D, Ochner CN, Ungredda T, Miller R, Kolbe L. Supermarket discounts of low-energy density foods: effects on purchasing, food intake, and body weight. Obesity (Silver Spring). 2013 Dec;21(12):E542-8. doi: 10.1002/oby.20484. Epub 2013 Jul 5.

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
137
August 2013
August 2013   (final data collection date for primary outcome measure)

Inclusion Criteria:

  • regularly buy 50% of groceries at designated supermarket
  • primary food shopper for household, shopping for up to one other person, not counting children ≤ 6 years old

Exclusion Criteria:

  • significant medical or psychiatric conditions
  • participation in a weight loss program or a related study
Both
18 Years to 65 Years
Yes
Contact information is only displayed when the study is recruiting subjects
United States
 
NCT01509664
05-115
Yes
Dr. Allan Geliebter, New York Obesity and Nutrition Research Center
New York Obesity and Nutrition Research Center
  • Robert Wood Johnson Foundation
  • Columbia University
Principal Investigator: Allan Geliebter, PhD New York Obesity and Nutrition Research Center
New York Obesity and Nutrition Research Center
January 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP