Price Changes and Hypothetical Food Purchases in Adult Grocery Shoppers

This study is ongoing, but not recruiting participants.
Information provided by (Responsible Party):
Leonard Epstein, State University of New York at Buffalo Identifier:
First received: June 12, 2012
Last updated: September 5, 2013
Last verified: September 2013

The goal of the proposed study is to apply experimental economics in an online grocery store shopping model to examine the effects of pricing on hypothetical food purchases

Subsidy 12.5%
Subsidy 25%
Tax 12.5%
Tax 25%
Usual Shopping

Study Type: Observational
Study Design: Observational Model: Case Control
Time Perspective: Prospective
Official Title: Experimental Analysis of Price Changes and Food Purchases in Obese and Lean Mothers

Further study details as provided by State University of New York at Buffalo:

Primary Outcome Measures:
  • Change in Energy Purchased. [ Time Frame: Study Completion ]

Estimated Enrollment: 250
Study Start Date: January 2011
Estimated Study Completion Date: December 2013
Estimated Primary Completion Date: December 2013 (Final data collection date for primary outcome measure)
Detailed Description:

Participants will be lean and overweight primary grocery shoppers aged 18 years and older. Participants will be considered lean if their body mass index (BMI = kg/m2) is less than 29.9, overweight if their BMI is greater than or equal to 30.12 To meet eligibility for the study, participants must be the guardian of a child at least 2 years or older, do the primary grocery shopping for the family, they must also report being weekly household grocery shoppers, and purchase the majority of their household's groceries once a week.


Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Female
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population

Lean and overweight Low and high socioeconimic status primary grocery shopper


Inclusion Criteria:

18 or older primary shopper in the household, atleast one child over 2 years of age

Exclusion Criteria:

eating disorders, not liking study foods

  Contacts and Locations
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Please refer to this study by its identifier: NCT01619787

United States, New York
University at Buffalo
Buffalo, New York, United States, 14214
Sponsors and Collaborators
State University of New York at Buffalo
Principal Investigator: Leonard H Epstein, PhD University at Buffalo
  More Information

No publications provided by State University of New York at Buffalo

Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Leonard Epstein, SUNY Distinguished Professor of Pediatrics and Social and Preventive Medicine, State University of New York at Buffalo Identifier: NCT01619787     History of Changes
Other Study ID Numbers: 1090209-1-55244
Study First Received: June 12, 2012
Last Updated: September 5, 2013
Health Authority: United States: Institutional Review Board

Keywords provided by State University of New York at Buffalo:
tax subsidy shopping processed this record on March 31, 2015