Working…
COVID-19 is an emerging, rapidly evolving situation.
Get the latest public health information from CDC: https://www.coronavirus.gov.

Get the latest research information from NIH: https://www.nih.gov/coronavirus.
ClinicalTrials.gov
ClinicalTrials.gov Menu

Shop For Success: Experimental Grocery Store Study

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT04097262
Recruitment Status : Completed
First Posted : September 20, 2019
Last Update Posted : May 20, 2020
Sponsor:
Information provided by (Responsible Party):
USDA Grand Forks Human Nutrition Research Center

Tracking Information
First Submitted Date  ICMJE September 18, 2019
First Posted Date  ICMJE September 20, 2019
Last Update Posted Date May 20, 2020
Actual Study Start Date  ICMJE August 22, 2019
Actual Primary Completion Date March 25, 2020   (Final data collection date for primary outcome measure)
Current Primary Outcome Measures  ICMJE
 (submitted: September 18, 2019)
Price elasticity of fruit [ Time Frame: Baseline ]
Percent change in the amount of fruit purchased (gram weight) for every percent change in the price of a given food.
Original Primary Outcome Measures  ICMJE Same as current
Change History
Current Secondary Outcome Measures  ICMJE
 (submitted: September 18, 2019)
Nutrient density of purchased foods [ Time Frame: Baseline ]
Ratio of low nutrient-dense food purchases to high nutrient-dense food purchases
Original Secondary Outcome Measures  ICMJE Same as current
Current Other Pre-specified Outcome Measures Not Provided
Original Other Pre-specified Outcome Measures Not Provided
 
Descriptive Information
Brief Title  ICMJE Shop For Success: Experimental Grocery Store Study
Official Title  ICMJE Price Elasticity of Fruit (Shop For Success)
Brief Summary The purpose of this research is to study how the price of foods affects food buying choices at the grocery store. The researchers are interested in this topic because the price of foods can have a big impact on what people choose to buy and prices change over time. The researchers are doing this study to see how changes in food prices affect what foods mothers choose for their families.
Detailed Description It is well known that the price of a given food affects the amount of that food an individual purchases. However, little is known about how specific groups, such as overweight/obese and those with lower incomes, change their food purchasing decisions depending on food price changes. Evidence has shown that these groups have lower quality diets and worse health outcomes than their normal weight and higher income counterparts. Therefore, it is important to gain a better understanding of how food price changes affect purchasing decisions among these populations in order to develop targeted nutrition interventions to improve their diet quality. To investigate this, the researchers will create a laboratory-based grocery store, in which pictures of foods will be used to substitute actual food. Food prices will be indicated on each picture. Participants will be given play money and a budget, and ask them to "purchase" foods in the mock grocery store. The price of food will be changed throughout the study to investigate how participants change their purchasing decisions based on these price changes.
Study Type  ICMJE Interventional
Study Phase  ICMJE Not Applicable
Study Design  ICMJE Allocation: Randomized
Intervention Model: Factorial Assignment
Intervention Model Description:
This study will utilize a three factor design, with one between-subject factor and two within-subject factors. The between-subject factor is participation in a federal food assistance program. The within-subject factors are price change condition and price change scenario.
Masking: None (Open Label)
Primary Purpose: Other
Condition  ICMJE
  • Overweight
  • Obesity
Intervention  ICMJE
  • Other: Own-Price Elasticity
    The price of fruit will be 75%, 100%, or 125% of the reference price, but the price of other foods will remain the same.
  • Other: Cross-Price Elasticity
    The price of fruit will remain the same, but the price of other foods will be 75%, 100%, or 125% of the reference price.
Study Arms  ICMJE
  • Experimental: Own-Price Elasticity
    The price of fruit will vary (own-price elasticity) while the price of all other foods in the "mock" grocery store will remain constant.
    Intervention: Other: Own-Price Elasticity
  • Experimental: Cross-Price Elasticity
    The price of fruit will remain constant while the price of other foods in the "mock" grocery store will vary (cross-price elasticity).
    Intervention: Other: Cross-Price Elasticity
Publications * Not Provided

*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Actual Enrollment  ICMJE
 (submitted: May 18, 2020)
73
Original Estimated Enrollment  ICMJE
 (submitted: September 18, 2019)
80
Actual Study Completion Date  ICMJE March 25, 2020
Actual Primary Completion Date March 25, 2020   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • Have at least one child up to 18 years of age residing in the household
  • Primary grocery shopper for the household
  • No health conditions or food practices that substantially limit food choice
  • Not currently pregnant
  • Consent to the study design

Exclusion Criteria:

  • Male
  • < 18 years of age
  • Not a mother, or children not living with subject in their household
  • No children below the age of 18 years of age
  • Not the primary grocery shopper for their household
  • Health conditions or food practices that substantially limit food choice
  • Currently pregnant
Sex/Gender  ICMJE
Sexes Eligible for Study: Female
Ages  ICMJE 18 Years and older   (Adult, Older Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT04097262
Other Study ID Numbers  ICMJE GFHNRC155
Has Data Monitoring Committee No
U.S. FDA-regulated Product
Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
IPD Sharing Statement  ICMJE
Plan to Share IPD: No
Responsible Party USDA Grand Forks Human Nutrition Research Center
Study Sponsor  ICMJE USDA Grand Forks Human Nutrition Research Center
Collaborators  ICMJE Not Provided
Investigators  ICMJE
Principal Investigator: James Roemmich, PhD USDA Grand Forks Human Nutrition Research Center
PRS Account USDA Grand Forks Human Nutrition Research Center
Verification Date May 2020

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