Testing "Ultraprocessed" Front-of-package Label Among Brazilian Consumers

Not Applicable

Completed

• Conditions: Dietary Exposure
• Interventions: Behavioral: Nutrient warning labels; Behavioral: Nutrient and ultraprocessed warning labels

• Registration Number: NCT05842460
• Lead Sponsor: University of North Carolina, Chapel Hill

Brief Summary

The goal of this experiment is to test the effects an "ultraprocessed" warning label on foods and beverages among Brazilian consumers. The main questions it aims to answer are:

* Do "ultraprocessed" warnings affect Brazilian consumers' intention to purchase products?

* Do "ultraprocessed" warnings affect Brazilian consumers' product perceptions?

Participants will see images of four products carrying either nutrient warning labels (which are currently mandatory in Brazil) or nutrient warning labels alongside an experimental warning label informing that the product is ultraprocessed. Participants will then answer survey questions about each product. Researchers will compare responses between both arms to determine if the "ultraprocessed" warning significantly changes the effect of nutrient warnings.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2023-03-15
• Study First Submitted QC: 2023-04-28
• Study First Posted: 2023-05-06
• Study Start: 2023-05-24
• Primary Completion: 2023-06-28
• Study Completion: 2023-06-28
• Status Verified: 2023-08
• Last Update Submitted: 2023-08-08
• Last Update Posted: 2023-08-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1007

Inclusion Criteria

Not provided

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Exclusion Criteria

Not provided

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Nutrient warnings	Nutrient warning labels	Individuals in this trial arm will see images of products carrying nutrient warnings that are currently included in Brazil's front-of-package labeling scheme.
Nutrient and ultraprocessed warnings	Nutrient and ultraprocessed warning labels	Individuals in this trial arm will see images of products carrying nutrient warnings that are currently included in Brazil's front-of-package labeling scheme and an experimental warning stating that the product is ultraprocessed.

Primary Outcome Measures

Name	Time	Method
Purchase intentions	Online survey within 20 minutes following completion of a ~10 minute shopping task.	How likely the participant would be to buy products will be measured by survey. Response options are on a 1 to 5 scale, with higher scores representing a higher likelihood of buying products.

Secondary Outcome Measures

Name	Time	Method
Product processing status perceptions	Online survey within 20 minutes following completion of a ~10 minute shopping task.	Whether the participant believes products are ultraprocessed will be measured by survey. Responses options are "no," "yes," and "I'm not sure."
Product healthfulness perceptions	Online survey within 20 minutes following completion of a ~10 minute shopping task.	How healthy products seem to the participant will be measured by survey. Response options are on a 1 to 5 scale, with higher scores representing a higher perceived product healthfulness.
Message effectiveness perceptions	Online survey within 20 minutes following completion of a ~10 minute shopping task.	Perceived message effectiveness of the study labels will be measured by survey through a three-item scale. Items inquire about how much the labels discourage the participant from wanting to consume the products, how much the labels make the participant concerned about the health effects of consuming the products, and how much the labels make consuming the products seem unpleasant. Response options are on a 1 to 5 scale, with higher scores representing a higher perceived message effectiveness of the study labels.

Trial Locations

Locations (1)

University of North Carolina at Chapel Hill; 🇺🇸 Chapel Hill, North Carolina, United States