OverweightNCT03296878
Food-for-Families: Experimental Grocery Store Study
A study testing Own-Price Elasticity and Cross-Price Elasticity in people with Overweight and Obesity, run by USDA Grand Forks Human Nutrition Research Center at 1 site in United States.
Trial summary
This is a study about how the price of foods affects buying choices at the grocery store. The price of foods can have a big impact on what people choose to buy and prices change over time. This study is being done to see how changes in food prices affect what mothers choose for their families. Read more about this study
- Who is it for?
- Ages 18 years and older, women onlyHealthy volunteers can take part
- Conditions the study is for
- Overweight, Obesity
- What is being tested?
- Own-Price Elasticity and Cross-Price Elasticity
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 80 participants
- Where
- 1 siteUnited States
- Study dates
- 16 Oct 2017to 29 Mar 2018
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- 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
Who cannot join
- 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
Trial locations and contacts
1 site in 1 country.
United States1 site
USDA Grand Forks Human Nutrition Research Center
Grand Forks, North Dakota, 58203
About this study
Official title: Food-for-Families: Relationship Between Income, Obesity, and Food Purchasing Using an Experimental Grocery Store Study
This is a study about how the price of foods affects buying choices at the grocery store. The price of foods can have a big impact on what people choose to buy and prices change over time. This study is being done to see how changes in food prices affect what mothers choose for their families.
Read the detailed description
It is well known that the price of a given food affects the amount of that item individuals will purchase. Yet little is known about how specific groups, such as obese/overweight individuals and those with lower incomes, change their food purchasing decisions depending on food price changes. Evidence shows 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 population groups 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 in lieu of actual foods. Food prices will be indicated on each picture. The participants will be given play money and a budget, and asked to "purchase" foods in the mock grocery store. The price of foods will be changed throughout the study to investigate how participants change their purchasing decisions based on these price changes.
- Conditions
- Overweight, Obesity
- Being tested
- Own-Price Elasticity, Cross-Price Elasticity
- Keywords
- low income
- Medical subject headings
- Overweight, Obesity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Own-Price ElasticityOther
The price of eggs will be 75%, 100%, or 125% of the reference price, but the price of other foods will remain the same.
Cross-Price ElasticityOther
The price of eggs will remain the same, but the price of other foods will be 75%, 100%, or 125% of the reference price.
| Study group | Role | What they receive |
|---|---|---|
| Own-Price Elasticity | Other | The price of eggs will vary (own-price elasticity) while the price of other foods in the "mock" grocery store will remain constant. Receives: Other: Own-Price Elasticity |
| Cross-Price Elasticity | Other | The eggs will remain constant while the price of other foods in the "mock" grocery store will vary (cross-price elasticity). Receives: Other: Cross-Price Elasticity |
What is being measured
The primary outcome is the main question the study is designed to answer.
Price elasticity of eggs
Percent change in the amount of eggs purchased (gram weight) for every percent change in the price of a given food.
Measured: Baseline
Secondary outcomes (1)
Nutrient density of purchased foods
Ratio of low nutrient-dense food purchases to high nutrient-dense food purchases
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Sep 2017
- Study start16 Oct 2017
- Primary completion29 Mar 2018
- Study completion29 Mar 2018
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for OverweightStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Factorial
- 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)
- Enrolment
- 80 participants (actual)
Sponsor and investigators
- Lead sponsor
- USDA Grand Forks Human Nutrition Research Center
- Sponsor type
- US federal agency
- Responsible party
- Sponsor
- Investigators
- James Roemmich, PhD, Principal investigator, USDA Grand Forks Human Nutrition Research Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03296878
- Sponsor's protocol ID
- GFHNRC151
- Status last verified
- May 2020
- First submitted
- 25 Sep 2017
- Last updated
- 20 May 2020
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 May 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Food-for-Families: Relationship Between Income, Obesity, and Food Purchasing Using an Experimental Grocery Store Study
- ClinicalTrials.gov ID
- NCT03296878
- Acronym / sponsor ID
- GFHNRC151
- Conditions
- Overweight, Obesity
- Keywords
- low income
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 80 participants (actual)
- Lead sponsor
- USDA Grand Forks Human Nutrition Research CenterUS federal agency
- Study start
- 16 Oct 2017 (actual)
- Primary completion
- 29 Mar 2018 (actual)
- Study completion
- 29 Mar 2018 (actual)
- First posted
- 28 Sep 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is a study about how the price of foods affects buying choices at the grocery store. The price of foods can have a big impact on what people choose to buy and prices change over time. This study is being done to see how changes in food prices affect what mothers choose for their families.
Detailed description
It is well known that the price of a given food affects the amount of that item individuals will purchase. Yet little is known about how specific groups, such as obese/overweight individuals and those with lower incomes, change their food purchasing decisions depending on food price changes. Evidence shows 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 population groups 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 in lieu of actual foods. Food prices will be indicated on each picture. The participants will be given play money and a budget, and asked to "purchase" foods in the mock grocery store. The price of foods will be changed throughout the study to investigate how participants change their purchasing decisions based on these price changes.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Factorial
- Masking
- None (open label)
- Number of arms
- 2
- 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.
| Arm | Type | Receives |
|---|---|---|
| Own-Price Elasticity | Other | Other: Own-Price ElasticityThe price of eggs will vary (own-price elasticity) while the price of other foods in the "mock" grocery store will remain constant. |
| Cross-Price Elasticity | Other | Other: Cross-Price ElasticityThe eggs will remain constant while the price of other foods in the "mock" grocery store will vary (cross-price elasticity). |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- 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
Key exclusion criteria (7 listed)
- 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
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Own-Price ElasticityThe price of eggs will be 75%, 100%, or 125% of the reference price, but the price of other foods will remain the same. | Other | Own-Price Elasticity |
| Cross-Price ElasticityThe price of eggs will remain the same, but the price of other foods will be 75%, 100%, or 125% of the reference price. | Other | Cross-Price Elasticity |
Primary outcome
Price elasticity of eggs
Time frame: Baseline
Percent change in the amount of eggs purchased (gram weight) for every percent change in the price of a given food.
1 secondary outcome
Nutrient density of purchased foods
Time frame: Baseline
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 May 2020.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
James Roemmich, PhD principal investigator
USDA Grand Forks Human Nutrition Research Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Own-Price Elasticity and Cross-Price Elasticity in people with Overweight and Obesity, run by USDA Grand Forks Human Nutrition Research Center at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 20 May 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Price elasticity of eggs (time frame: Baseline). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 May 2020.