Ultraprocessed Foods in Colombia
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 2,000
- 试验地点
- 1
- 主要终点
- Purchase intention
研究概览
简要总结
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.
详细描述
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:
- Warning label + Character
- Warning label only
- Barcode control label + Character
- 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:
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Factorial
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 12 Years 至 17 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Children and adolescents between 12 and 17 years old
- •Colombian residents
排除标准
- •Children with legal blindness, partial blindness, or total blindness, since the study involves viewing images and reading questions.
研究组 & 干预措施
Warning label + Character
干预措施: Warning label (Behavioral)
Barcode control label + Character
干预措施: Barcode control label (Behavioral)
Warning label only
干预措施: Without character (Behavioral)
Warning label only
干预措施: Warning label (Behavioral)
Barcode control label + Character
干预措施: Character (Behavioral)
Barcode control label only
干预措施: Barcode control label (Behavioral)
Barcode control label only
干预措施: Without character (Behavioral)
Warning label + Character
干预措施: Character (Behavioral)
结局指标
主要结局
Purchase intention
时间窗: During ~15 minute online survey
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.
Risk perception
时间窗: During ~15 minute online survey
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).
次要结局
- Perceived Message Effectiveness(During ~15 minute online survey)