Testing "Ultraprocessed" Front-of-package Label Among Brazilian Consumers
Testing the Impact of an "Ultraprocessed" Front-of-package Warning Label Among Brazilian Consumers
1 other identifier
interventional
1,007
1 country
1
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.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started May 2023
Shorter than P25 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
March 15, 2023
CompletedFirst Posted
Study publicly available on registry
May 6, 2023
CompletedStudy Start
First participant enrolled
May 24, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
June 28, 2023
CompletedStudy Completion
Last participant's last visit for all outcomes
June 28, 2023
CompletedAugust 14, 2023
August 1, 2023
1 month
March 15, 2023
August 8, 2023
Conditions
Outcome Measures
Primary Outcomes (1)
Purchase intentions
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.
Online survey within 20 minutes following completion of a ~10 minute shopping task.
Secondary Outcomes (3)
Product healthfulness perceptions
Online survey within 20 minutes following completion of a ~10 minute shopping task.
Product processing status perceptions
Online survey within 20 minutes following completion of a ~10 minute shopping task.
Message effectiveness perceptions
Online survey within 20 minutes following completion of a ~10 minute shopping task.
Study Arms (2)
Nutrient warnings
ACTIVE COMPARATORIndividuals 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
EXPERIMENTALIndividuals 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.
Interventions
Inclusion of nutrient warning labels, which are currently mandatory in Brazil, to images of food products.
Inclusion of nutrient warning labels, which are currently mandatory in Brazil, and an experimental ultraprocessed warning label to images of food products.
Eligibility Criteria
You may qualify if:
- years or older,
- residing in Brazil,
- responsible for at least 50% of the household's grocery purchases.
You may not qualify if:
- involvement in any pre-testing.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University of North Carolina at Chapel Hill
Chapel Hill, North Carolina, 27516, United States
Related Publications (3)
Cotter T, Kotov A, Wang S, Murukutla N. 'Warning: ultra-processed' - A call for warnings on foods that aren't really foods. BMJ Glob Health. 2021 Dec;6(12):e007240. doi: 10.1136/bmjgh-2021-007240. No abstract available.
PMID: 34933866BACKGROUNDRomero Ferreiro C, Lora Pablos D, Gomez de la Camara A. Two Dimensions of Nutritional Value: Nutri-Score and NOVA. Nutrients. 2021 Aug 13;13(8):2783. doi: 10.3390/nu13082783.
PMID: 34444941BACKGROUNDD'Angelo Campos A, Ng SW, Duran AC, Khandpur N, Taillie LS, Christon FO, Hall MG. "Warning: ultra-processed": an online experiment examining the impact of ultra-processed warning labels on consumers' product perceptions and behavioral intentions. Int J Behav Nutr Phys Act. 2024 Oct 9;21(1):115. doi: 10.1186/s12966-024-01664-w.
PMID: 39385224DERIVED
Related Links
MeSH Terms
Interventions
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Lindsey Taillie, PhD
University of North Carolina, Chapel Hill
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- PREVENTION
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
March 15, 2023
First Posted
May 6, 2023
Study Start
May 24, 2023
Primary Completion
June 28, 2023
Study Completion
June 28, 2023
Last Updated
August 14, 2023
Record last verified: 2023-08
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- ANALYTIC CODE
- Time Frame
- Upon publication of the study.
- Access Criteria
- No access criteria. The dataset and analytic code will be made publicly available at Open Science Framework.
A deidentified dataset and analytic code will be uploaded to a public repository upon publication of the study.