Impact of Front-of-package Warning Labels on Perceived Weight Stigmatization
NCT ID: NCT06179043
Last Updated: 2024-02-13
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
2522 participants
INTERVENTIONAL
2024-01-18
2024-01-26
Brief Summary
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* Are certain types of front-of-package warning labels perceived as more stigmatizing than others?
* Are more weight-neutral versions of front-of-package warning labels perceived as less stigmatizing than their regular versions?
* Is there a trade-off between label effectiveness in discouraging product consumption and perceived weight stigmatization?
Additionally, this experiment also aims to answer the following questions:
* Does exposure to certain types of front-of-package warning labels lead to changes in participants' weight bias?
* Are changes in participants' weight bias as a result of label exposure mediated by attribution of personal responsibility for body weight, pathogen disgust, or perceived social consensus?
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
FACTORIAL
PREVENTION
NONE
Study Groups
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Control labels
Individuals in this trial arm will see neutral control labels on sugar-sweetened beverages.
Control labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* A neutral bar code label
* A neutral quick response (QR) code label (not scannable)
Nutrient warning labels
Individuals in this trial arm will see nutrient warning labels on sugar-sweetened beverages.
Nutrient warning labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* Labels that read "high in sugars" and "high in calories"
* A label that reads "high in sugars"
Text-only health warning labels
Individuals in this trial arm will see text-only health warning labels on sugar-sweetened beverages.
Text-only health warning labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* A label that reads "Drinking beverages with added sugars contributes to obesity, type 2 diabetes and tooth decay"
* A label that reads "Drinking beverages with added sugars contributes type 2 diabetes and tooth decay"
Graphic warning labels
Individuals in this trial arm will see graphic health warning labels on sugar-sweetened beverages.
Graphic health warning labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* A label that reads "Drinking beverages with added sugars contributes to obesity, type 2 diabetes and tooth decay" and contains graphics illustrating obesity, type 2 diabetes, and tooth decay
* A label that reads "Drinking beverages with added sugars contributes type 2 diabetes and tooth decay" and contains graphics illustrating type 2 diabetes and tooth decay
Interventions
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Nutrient warning labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* Labels that read "high in sugars" and "high in calories"
* A label that reads "high in sugars"
Text-only health warning labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* A label that reads "Drinking beverages with added sugars contributes to obesity, type 2 diabetes and tooth decay"
* A label that reads "Drinking beverages with added sugars contributes type 2 diabetes and tooth decay"
Graphic health warning labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* A label that reads "Drinking beverages with added sugars contributes to obesity, type 2 diabetes and tooth decay" and contains graphics illustrating obesity, type 2 diabetes, and tooth decay
* A label that reads "Drinking beverages with added sugars contributes type 2 diabetes and tooth decay" and contains graphics illustrating type 2 diabetes and tooth decay
Control labels
In random order, participants in this arm will see an image of fictional sugar-sweetened beverages carrying:
* A neutral bar code label
* A neutral quick response (QR) code label (not scannable)
Eligibility Criteria
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Inclusion Criteria
* Residing in the US.
Exclusion Criteria
21 Years
ALL
Yes
Sponsors
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Stanford University
OTHER
University of North Carolina, Chapel Hill
OTHER
Responsible Party
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Principal Investigators
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Aline D'Angelo Campos, MPP
Role: PRINCIPAL_INVESTIGATOR
University of North Carolina, Chapel Hill
Locations
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University of North Carolina at Chapel Hill
Chapel Hill, North Carolina, United States
Countries
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References
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Grummon AH, Gibson LA, Musicus AA, Stephens-Shields AJ, Hua SV, Roberto CA. Effects of 4 Interpretive Front-of-Package Labeling Systems on Hypothetical Beverage and Snack Selections: A Randomized Clinical Trial. JAMA Netw Open. 2023 Sep 5;6(9):e2333515. doi: 10.1001/jamanetworkopen.2023.33515.
Hayward LE, Vartanian LR. Potential unintended consequences of graphic warning labels on sugary drinks: do they promote obesity stigma? Obes Sci Pract. 2019 Aug 2;5(4):333-341. doi: 10.1002/osp4.353. eCollection 2019 Aug.
D'Angelo Campos A, Grummon AH, Ng SW, Puhl RM, Golden SD, Hall MG. Front-of-Package Food Labels and Perceived Weight Stigmatization: A Randomized Clinical Trial. JAMA Netw Open. 2025 Jun 2;8(6):e2516821. doi: 10.1001/jamanetworkopen.2025.16821.
Provided Documents
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Document Type: Study Protocol and Statistical Analysis Plan
Other Identifiers
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23-3069
Identifier Type: -
Identifier Source: org_study_id
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