Encouraging Healthy and Sustainable Dietary Substitutions: A Randomized Experiment With Emerging Adults
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 1,753
- 试验地点
- 2
- 主要终点
- Perceived Message Effectiveness
研究概览
简要总结
The aim of this study is to examine emerging adults' responses to dietary substitution messages about health, the environment, or both health and the environment.
详细描述
This online study will examine emerging adults' responses to dietary substitution messages about 4 different topics. Participants will be randomized to 1 of 4 topic arms: 1) Control (neutral topic, not related to health or the environment); 2) Health topic; 3) Environment topic; 4) Health and Environment topic. Participants will view messages about each of 4 dietary substitutions: replacing red meat with chicken or vegetarian options; replacing dairy milk with non-dairy milk; replacing juice with whole fruit; and replacing sugar-sweetened beverages with water. For each dietary substitution, participants will view 2 messages about their assigned topic, with the 2 messages shown in random order. Participants will rate each message on perceived message effectiveness (primary outcome).
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 25 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Age between 18-25 years
- •Reside in the United States
- •Ability to complete a survey in English
排除标准
- •Older than 25 years; younger than 18 years
- •Reside outside of the United States
- •Unable to complete a survey in English
研究组 & 干预措施
Health messages
Messages shown will be related to the health impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).
干预措施: Health messages (Behavioral)
Environment messages
Messages shown will be related to the environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).
干预措施: Environmental messages (Behavioral)
Health and environment messages
Messages shown will be related to the health and environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).
干预措施: Health and environmental messages (Behavioral)
Neutral messages
Messages shown will be neutral and unrelated to the health or environmental impacts of making certain dietary substitutions (replacing beef with chicken and vegetarian entrees; replacing juice with whole fruit; replacing dairy milk with non-dairy milk; replacing sugar-sweetened beverages with water).
干预措施: Neutral messages (Behavioral)
结局指标
主要结局
Perceived Message Effectiveness
时间窗: Survey questions administered after participant viewed each message; overall survey took up to 20 minutes
Participants will rate each message on perceived message effectiveness (PME) for encouraging participants to make the target dietary substitution. PME will be assessed with 4 items \[the text shown in brackets will be tailored to each substitution\]: 1. How much does this message discourage you from wanting to \[eat beef and pork / drink juice / drink cow's milk / drink sugary drinks\]? 2. How much does this message make \[eating beef and pork, etc.\] seem unpleasant to you? 3. How much does this message make you concerned about the effects of \[eating beef and pork, etc.\]? 4. How much does this message make you want to \[eat chicken or vegetarian options instead of beef and pork, etc.\]? The response options for each item are: 1=Not at all, 2=Very little, 3=Somewhat, 4=Quite a bit, 5=A great deal. Investigators will average responses to these 4 items to create a perceived message effectiveness score. Higher scores indicated higher perceived message effectiveness.
次要结局
未报告次要终点
研究者
Anna Grummon
Assistant Professor
Stanford University