Ultraprocessed Foods in Colombia

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.

NCT Number	NCT07528443
Lead Sponsor	University of North Carolina, Chapel Hill Collaborators: The Bloomberg Family Foundation, Inc., Pontificia Universidad Javeriana
Conditions	Obesity
Enrollment	1,960 participants
Start Date	2026-06-25
Primary Completion	2026-09-30 (estimated)
Study Completion	2026-09-30 (estimated)
Updated on ClinicalTrials.gov	2026-06-25