Food Preferences Clinical Trial
Official title:
Comparing Designs for Environmental Sustainability "Eco-Labels" for Restaurant Menus
NCT number | NCT05953246 |
Other study ID # | 69580b |
Secondary ID | |
Status | Completed |
Phase | N/A |
First received | |
Last updated | |
Start date | August 7, 2023 |
Est. completion date | August 7, 2023 |
Verified date | August 2023 |
Source | Stanford University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The aim of this study is to compare responses to 5 different types of labels for restaurant menus: 1) Control (non-sustainability-label: neutral labels not referencing environmental sustainability); 2) Numeric text-only sustainability label; 3) Endorsement text-only sustainability label; 4) Endorsement icon-only sustainability label; 5) Endorsement text-plus-icon sustainability label. Participants will be randomized to 1 of the 5 labeling arms above. Each participant will view 3 labels (shown in random order) from their randomly assigned labeling arm and respond to survey questions about each label (e.g., attention, perceived effectiveness).
Status | Completed |
Enrollment | 2207 |
Est. completion date | August 7, 2023 |
Est. primary completion date | August 7, 2023 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Participants will be US adults - Ages 18 or older - With an over-sample of adults (50% of total sample) 18-29 years Exclusion Criteria: - Younger than 18 - Non-US |
Country | Name | City | State |
---|---|---|---|
United States | Stanford School of Medicine | Palo Alto | California |
Lead Sponsor | Collaborator |
---|---|
Stanford University | Harvard Pilgrim Health Care |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Perceived message effectiveness | Participants will rate the extent to which the label makes them want to choose items with the label on a 5-point scale ranging from low (1) to high (5). They will also rate the extent to which the label makes eating items with the label seem appealing to them on a 5-point scale ranging from low (1) to high (5). These items are adapted from the 3-item UNC Perceived Message Effectiveness scale. Investigators will average responses to these two items to create a perceived message effectiveness score, which will also range from low (1) to high (5). Higher scores therefore indicate higher perceived message effectiveness. | The survey will take up to 20 minutes | |
Secondary | Attention | Participants will rate the extent to which the label captures their attention on a 5-point response scale ranging from low (1) to high (5). Higher scores indicate more attention-grabbing labels (a better outcome). | The survey will take up to 20 minutes | |
Secondary | Thinking about environmental effects | Participants will rate the extent to which the label makes them think about the environmental impacts of their food choices on a 5-point response scale ranging from low (1) to high (5). Higher scores indicate labels elicit more thinking about environmental effects (a better outcome). | The survey will take up to 20 minutes | |
Secondary | Anticipated social interactions | Participants will rate how likely they are to talk about the label with others in the next week on a 5-point response scale ranging from low (1) to high (5). Higher scores indicate labels elicit more anticipated social interactions (a better outcome). | The survey will take up to 20 minutes | |
Secondary | Believability | Participants will rate how believable the label is on a 5-point response scale ranging from low (1) to high (5). Higher scores indicate labels are more believable (a better outcome). | The survey will take up to 20 minutes |
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