NCT07528443

Brief Summary

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.

Trial Health

63
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Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
1,960

participants targeted

Target at P75+ for not_applicable obesity

Timeline
3mo left

Started May 2026

Shorter than P25 for not_applicable obesity

Geographic Reach
1 country

1 active site

Status
not yet recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Progress30%
May 2026Sep 2026

First Submitted

Initial submission to the registry

April 7, 2026

Completed
7 days until next milestone

First Posted

Study publicly available on registry

April 14, 2026

Completed
17 days until next milestone

Study Start

First participant enrolled

May 1, 2026

Completed
5 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 30, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

September 30, 2026

Last Updated

April 14, 2026

Status Verified

March 1, 2026

Enrollment Period

5 months

First QC Date

April 7, 2026

Last Update Submit

April 7, 2026

Conditions

Obesity

Outcome Measures

Primary Outcomes (2)

  • Purchase intention

    Purchase intention will be assessed using 1 item: "How likely are you to consume this product?" Responses will be recorded on a 5-point Likert-style scale ranging from 1 ("Not at all likely") to 5 ("Very likely"). Because this is a single-item measure, the total score ranges from 1 to 5. Higher scores indicate greater purchase intention, whereas lower scores indicate lower purchase intention.

    During ~15 minute online survey

  • Risk perception

    Risk perception will be assessed using 1 item: "How healthy do you think this product is?" Responses will be recorded on a 5-point Likert-style scale ranging from 1 ("Not healthy at all") to 5 ("Very healthy"). Because this is a single-item measure, the total score ranges from 1 to 5. Higher scores indicate that the product is perceived as healthier (i.e., lower perceived risk), whereas lower scores indicate that the product is perceived as less healthy (i.e., higher perceived risk).

    During ~15 minute online survey

Secondary Outcomes (1)

  • Perceived Message Effectiveness

    During ~15 minute online survey

Study Arms (4)

Warning label + Character

EXPERIMENTAL
Behavioral: Warning labelBehavioral: Character

Barcode control label + Character

EXPERIMENTAL
Behavioral: Barcode control labelBehavioral: Character

Warning label only

EXPERIMENTAL
Behavioral: Warning labelBehavioral: Without character

Barcode control label only

OTHER
Behavioral: Barcode control labelBehavioral: Without character

Interventions

Warning labelBEHAVIORAL

Participants will view images of three products containing octagonal warning labels.

Warning label + CharacterWarning label only
Barcode control labelBEHAVIORAL

Participants will view images of three products containing Barcode control label.

Barcode control label + CharacterBarcode control label only
CharacterBEHAVIORAL

Participants will view images of three products containing characters.

Barcode control label + CharacterWarning label + Character
Without characterBEHAVIORAL

Participants will view images of three products without characters.

Barcode control label onlyWarning label only

Eligibility Criteria

Age12 Years - 17 Years
Sexall
Healthy VolunteersYes
Age GroupsChild (0-17)

You may qualify if:

  • Children and adolescents between 12 and 17 years old
  • Colombian residents

You may not qualify if:

  • Children with legal blindness, partial blindness, or total blindness, since the study involves viewing images and reading questions.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Online panel

Bogotá, Colombia

Location

MeSH Terms

Conditions

Obesity

Interventions

Multifactorial Inheritance

Condition Hierarchy (Ancestors)

OverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Inheritance PatternsGenetic Phenomena

Study Officials

  • Maria Parra-Murillo

    University of North Carolina, Chapel Hill

    PRINCIPAL INVESTIGATOR

  • Marissa Hall, PhD

    University of North Carolina, Chapel Hill

    STUDY DIRECTOR

Central Study Contacts

Maria Parra-Murillo

CONTACT

9843220948mparram@unc.edu

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
FACTORIAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

April 7, 2026

First Posted

April 14, 2026

Study Start

May 1, 2026

Primary Completion (Estimated)

September 30, 2026

Study Completion (Estimated)

September 30, 2026

Last Updated

April 14, 2026

Record last verified: 2026-03

Data Sharing

IPD Sharing
Will not share

Locations

CO(1)