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| Name | Class |
|---|---|
| The Bloomberg Family Foundation, Inc. | OTHER |
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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:
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.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Nutrient warnings | Active Comparator | 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. |
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| Nutrient and ultraprocessed warnings | Experimental | 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. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Nutrient warning labels | Behavioral | Inclusion of nutrient warning labels, which are currently mandatory in Brazil, to images of food products. |
|
| Measure | Description | Time Frame |
|---|---|---|
| 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. |
| Measure | Description | Time Frame |
|---|---|---|
| Product healthfulness perceptions | 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. | Online survey within 20 minutes following completion of a ~10 minute shopping task. |
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Inclusion criteria:
Exclusion criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Lindsey Taillie, PhD | University of North Carolina, Chapel Hill | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of North Carolina at Chapel Hill | Chapel Hill | North Carolina | 27516 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 34933866 | Background | 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. | |
| 34444941 | Background | Romero 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. |
| Label | URL |
|---|---|
| Related Info | View source |
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A deidentified dataset and analytic code will be uploaded to a public repository upon publication of the study.
Upon publication of the study.
No access criteria. The dataset and analytic code will be made publicly available at Open Science Framework.
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| SAP | No | Yes | No | Statistical Analysis Plan | May 11, 2023 | May 19, 2023 | SAP_000.pdf |
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| ID | Term |
|---|---|
| D000078622 | Nutrients |
| ID | Term |
|---|---|
| D005502 | Food |
| D000066888 | Diet, Food, and Nutrition |
| D010829 | Physiological Phenomena |
| D019602 | Food and Beverages |
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| Nutrient and ultraprocessed warning labels | Behavioral | Inclusion of nutrient warning labels, which are currently mandatory in Brazil, and an experimental ultraprocessed warning label to images of food products. |
|
| Product processing status perceptions |
Whether the participant believes products are ultraprocessed will be measured by survey. Responses options are "no," "yes," and "I'm not sure." |
| Online survey within 20 minutes following completion of a ~10 minute shopping task. |
| Message effectiveness perceptions | 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. | Online survey within 20 minutes following completion of a ~10 minute shopping task. |
| 39385224 | Derived | D'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. |