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The purpose of the research is to examine the association between price changes, nutrient profiling, and grocery food purchases among household grocery shoppers.
Participants will be asked to select a week's worth of groceries for their household from a virtual online grocery store. Shoppers will be randomly assigned to one of four conditions (control, nutrient profiling, price change, nutrient profiling and price change).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Usual shopping | No Intervention | No change in condition. | |
| Nutrient profiling | Experimental | Nutrient profiling system will be present during shopping session. |
|
| Price change | Experimental | Price changes will be present during shopping session. |
|
| Nutrient profiling and price change | Experimental | Nutrient profiling system and price changes will be present during shopping session. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nutrient profiling | Behavioral | Nutrient profiling system will be present during shopping session. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Nutritional Quality of Food Purchases | The Overall Nutrient Quality Index (ONQI) was used to assess nutritional quality of foods purchased. The ONQI is a 1 - 100 scale in which higher numbers indicate higher nutritional quality. Each food is given a score based on a ratio with positive health nutrients in the numerator and detrimental health nutrients in the denominator, based on a proprietary algorithm created by NuVal. The average ONQI score for all the groceries purchases was used as the outcome measure, of ONQI scores on a scale. | Participants were followed for one shopping session, an average of 2.5 hours |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Leonard Epstein, Ph.D | University at Buffalo | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University at Buffalo | Buffalo | New York | 14214 | United States |
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| Label | URL |
|---|---|
| Division of Behavioral Medicine, University at Buffalo | View source |
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Participants were recruited from the WNY community between 2012-2014.
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| ID | Title | Description |
|---|---|---|
| FG000 | Usual Shopping | No change in condition. |
| FG001 | Nutrient Profiling | Nutrient profiling system will be present during shopping session. |
| FG002 | Price Change | Price changes will be present during shopping session. |
| FG003 | Nutrient Profiling and Price Change | Nutrient profiling system and price changes will be present during shopping session. |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
|
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| ID | Title | Description |
|---|---|---|
| BG000 | Usual Shopping | No change in condition. |
| BG001 | Nutrient Profiling | Nutrient profiling system will be present during shopping session. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Nutritional Quality of Food Purchases | The Overall Nutrient Quality Index (ONQI) was used to assess nutritional quality of foods purchased. The ONQI is a 1 - 100 scale in which higher numbers indicate higher nutritional quality. Each food is given a score based on a ratio with positive health nutrients in the numerator and detrimental health nutrients in the denominator, based on a proprietary algorithm created by NuVal. The average ONQI score for all the groceries purchases was used as the outcome measure, of ONQI scores on a scale. | Data was analyzed for 781 participants. Two participants did not understand the study, 2 participants had incorrect price manipulations during their session, 1 participant was ill during the session, 1 participant had her young daughter in the room during the experiment and 1 participant did not have a household to shop for. | Posted | Least Squares Mean | Standard Deviation | Average NUVAL Score | Participants were followed for one shopping session, an average of 2.5 hours |
|
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Usual Shopping | No change in condition. |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Leonard H. Epstein | SUNYBuffalo | 716-829-3400 | lhenet@buffalo.edu |
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| Price Changes | Behavioral | Price changes will be present during shopping session. |
|
| BG002 | Price Change | Price changes will be present during shopping session. |
| BG003 | Nutrient Profiling and Price Change | Nutrient profiling system and price changes will be present during shopping session. |
| BG004 | Total | Total of all reporting groups |
| years |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| Ethnicity (NIH/OMB) | Count of Participants | Participants |
|
| Race (NIH/OMB) | Count of Participants | Participants |
|
| Region of Enrollment | Number | participants |
|
| Body Mass Index (BMI) | Mean | Standard Deviation | Kg/m^2 |
|
| Usual Shopping |
No change in condition. |
| OG001 | Nutrient Profiling | Nutrient profiling system will be present during shopping session. |
| OG002 | Price Change | Price changes will be present during shopping session. |
| OG003 | Nutrient Profiling and Price Change | Nutrient profiling system and price changes will be present during shopping session. |
|
|
| 0 |
| 196 |
| 0 |
| 196 |
| EG001 | Nutrient Profiling | Nutrient profiling system will be present during shopping session. | 0 | 198 | 0 | 198 |
| EG002 | Price Change | Price changes will be present during shopping session. | 0 | 197 | 0 | 197 |
| EG003 | Nutrient Profiling and Price Change | Nutrient profiling system and price changes will be present during shopping session. | 0 | 197 | 0 | 197 |
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