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
3645 participants
INTERVENTIONAL
2025-07-14
2025-08-31
Brief Summary
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Do ultraprocessed warning labels on their own impact product purchase intentions?
Do ultraprocessed warning labels impact product purchase intentions in the presence of nutrient warning labels?
Do ultraprocessed warning labels help more consumers identify ultraprocessed foods?
Participants will be randomly assigned to a control arm or an ultraprocessed warning label arm. In both arms, products will carry nutrient warning labels, which are Chile's current policy. Participants will see three similar products, all of which will be ultraprocessed: one not high in any nutrients of concern, one high in sodium, and one high in sodium and saturated fat. For each product, participants will rate their purchase intentions and indicate whether they believe the product to be ultraprocessed. Researchers will compare results across arms.
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Detailed Description
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In random order, participants will see three similar mock bags of potato chips. All products seen will be ultraprocessed, and thus carry an ultraprocessed warning label in the ultraprocessed warning label arm. Additionally, one of the products will not be high in any nutrients of concern, one product will be high in sodium, and one product will be high in sodium and saturated fat. For each product, participants will rate their purchase intentions, perceived healthfulness, and indicate whether they believe the product to be ultraprocessed.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
NONE
Study Groups
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Control
Control
Products do not carry ultraprocessed warning label. To match the current Chilean legislation, products carry octagonal nutrient labels when applicable.
Ultraprocessed warning label
Ultraprocessed warning label
Products carry ultraprocessed warning label. To match the current Chilean legislation, products carry octagonal nutrient labels when applicable.
Interventions
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Control
Products do not carry ultraprocessed warning label. To match the current Chilean legislation, products carry octagonal nutrient labels when applicable.
Ultraprocessed warning label
Products carry ultraprocessed warning label. To match the current Chilean legislation, products carry octagonal nutrient labels when applicable.
Eligibility Criteria
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Inclusion Criteria
* Parent or guardian of child between 2-14 years old who has never been diagnosed with diabetes, high blood sugar, pre-diabetes or insulin resistance
* Residing in Chile
Exclusion Criteria
* Not parent or guardian of child between 2-14 years old who has never been diagnosed with diabetes, high blood sugar, pre-diabetes or insulin resistance
* Not residing in Chile
18 Years
ALL
Yes
Sponsors
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Instituto de Nutrición y Tecnología de los Alimentos
OTHER
Bloomberg Philanthropies
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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The University of North Carolina at Chapel Hill's Gillings School of Global Public Health
Chapel Hill, North Carolina, United States
Countries
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Provided Documents
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Document Type: Study Protocol and Statistical Analysis Plan
Other Identifiers
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24-2896b
Identifier Type: -
Identifier Source: org_study_id
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