Ultraprocessed Foods in Colombia
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Warning label, Barcode control label, Character, Without character.
- Who it may be relevant to
- Registry conditions: Obesity. Basic parameters: 12 years — 17 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Colombia
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
The study seeks to examine how characters on packaging and warning labels affect purchase intentions and risk perception among children aged 12 to 17 in Colombia and, examine whether characters' presence weakens or reduces the perceived message effectiveness of the warning labels' impact. This will be a 2x2 between-subjects experiment manipulating presence or absence of characters and presence or absence of warning labels. Participants will be randomly assigned to 1 of 4 conditions in an online survey programmed in Qualtrics.
Detailed description
This study will employ a 2x2 between-subjects experimental design to investigate the independent and combined effects of characters and front-of-package warning labels on children's risk perceptions, purchase intentions and perceived message effectiveness regarding ultra-processed foods.
After parents or legal guardians provide informed consent and the children assent to participate, the survey platform (Qualtrics) will randomly assign each child to one of four experimental conditions:
1. Warning label + Character 2. Warning label only 3. Barcode control label + Character 4. Barcode control label only
Participants will complete the study online through a self-administered survey programmed in Qualtrics. This survey has a duration of approximately 15 minutes. Each child will be exposed to three fictional ultra-processed food products (cookies package, juice bottle, and chip bag), displayed in random order. The stimuli were developed to resemble common products in Colombia but without using real brands to avoid brand loyalty bias. Each product will be displayed with a label consistent with the child's assigned experimental condition.
Children will respond to a series of questions for each product individually. These questions will assess:
* Risk perception * Purchase intention * Perceived message effectiveness
Interventions
- Behavioral Warning label
Participants will view images of three products containing octagonal warning labels. - Behavioral Barcode control label
Participants will view images of three products containing Barcode control label. - Behavioral Character
Participants will view images of three products containing characters. - Behavioral Without character
Participants will view images of three products without characters.
Primary outcome measures
- Purchase intention [Time frame: During ~15 minute online survey]
- Risk perception [Time frame: During ~15 minute online survey]
Secondary outcome measures (1)
- Perceived Message Effectiveness [Time frame: During ~15 minute online survey]
Eligibility criteria
Inclusion criteria
- Children and adolescents between 12 and 17 years old
- Colombian residents
Exclusion criteria
- Children with legal blindness, partial blindness, or total blindness, since the study involves viewing images and reading questions.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Allocation
- Randomized
- Model
- Factorial
- Masking
- Open label
- Primary purpose
- Prevention
Study locations
Colombia · 1 center
- Online panel — Bogotá
Identifiers
NCT: NCT07528443 · 24-2935