Encouraging Healthy Food Shopping and Eating Behaviors by Price Reduction: A Community Supermarket Study
This study is enrolling participants by invitation only.
Sponsor:
New York Obesity and Nutrition Research Center
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: February 6, 2013
Last verified: February 2013
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Purpose
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.
| Condition | Intervention |
|---|---|
|
Obesity |
Behavioral: Discount intervention |
| Study Type: | Interventional |
| Study Design: | Allocation: Randomized Endpoint Classification: Efficacy Study Intervention Model: Parallel Assignment Masking: Open Label Primary Purpose: Treatment |
| Official Title: | Encouraging Healthy Food Shopping and Eating Behaviors by Price Reduction: A Community Supermarket Study |
Resource links provided by NLM:
Further study details as provided by New York Obesity and Nutrition Research Center:
Primary Outcome Measures:
- 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).
- 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).
Secondary Outcome Measures:
- 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).
| Estimated Enrollment: | 160 |
| Study Start Date: | August 2006 |
| Estimated Primary Completion Date: | January 2014 (Final data collection date for primary outcome measure) |
| Arms | Assigned Interventions |
|---|---|
|
Experimental: Discount intervention
Receives 50% discount intervention on selected fruits and vegetables at participating supermarket.
|
Behavioral: Discount intervention
50% discount on selected fruits and vegetables at participating supermarket
|
|
No Intervention: Control
Received no discount at the participating supermarket.
|
Eligibility| Ages Eligible for Study: | 18 Years to 65 Years |
| Genders Eligible for Study: | Both |
| Accepts Healthy Volunteers: | Yes |
Criteria
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
Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT01509664
Locations
| United States, New York | |
| St. Luke's Hospital | |
| New York, New York, United States, 10025 | |
Sponsors and Collaborators
New York Obesity and Nutrition Research Center
Robert Wood Johnson Foundation
Columbia University
Investigators
| Principal Investigator: | Allan Geliebter, PhD | New York Obesity and Nutrition Research Center |
More Information
Additional Information:
Publications:
| Responsible Party: | Dr. Allan Geliebter, Principal Investigator, New York Obesity and Nutrition Research Center |
| ClinicalTrials.gov Identifier: | NCT01509664 History of Changes |
| Other Study ID Numbers: | 05-115 |
| Study First Received: | January 3, 2012 |
| Last Updated: | February 6, 2013 |
| Health Authority: | United States: Institutional Review Board |
Additional relevant MeSH terms:
|
Obesity Overnutrition Nutrition Disorders |
Overweight Body Weight Signs and Symptoms |
ClinicalTrials.gov processed this record on May 16, 2013