Evaluating a Counter-marketing Campaign to Improve Diet Quality Among Young Adults
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 入组人数
- 750
- 主要终点
- Diet quality (Healthy Eating Index-2020 score)
研究概览
简要总结
This study aims to determine whether online social media campaigns improve diet quality among young adults. Young adults will be exposed to one of three social media campaigns.
详细描述
In this 3-arm parallel randomized controlled trial, participants will be randomized to one of three arms: 1) Control (neutral) messages, 2) Health education messages that focus on describing the health harms of consuming sugary drinks and processed snack foods, or 3) Counter-marketing messages that focus on exposing and undermining deceptive, harmful, or misleading marketing practices used by food companies to sell unhealthy foods. In each arm, participants will follow private Instagram accounts corresponding to their study arm. The study team will post campaign messages to the Instagram accounts. Participants will complete dietary recalls and answer online survey questions.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Investigator)
盲法说明
The investigator and data analyst will not be aware of participants' assignments.
入排标准
- 年龄范围
- 18 Years 至 29 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •18-29 years old
- •Reside in the US
- •Speak English
- •Use Instagram 3-4 times per week or more
- •Consume sugary drinks 5-6 times per week or more and consume sweet and salty snacks 5-6 times per week or more
排除标准
- •Younger than 18 years or older than 29 years
- •Do not reside in the US
- •Do not speak English
- •Use Instagram less than 3-4 times per week
- •Consume sugary drinks less than 5-6 times per week or consume sweet and salty snacks less than 5-6 times per week
研究组 & 干预措施
Counter-marketing messages
Participants will view a 10-week Instagram-delivered counter-marketing campaign exposing deceptive and harmful marketing practices used by food companies to sell sugary drinks and processed snack foods. Messages are drawn from those identified as most promising in prior message-development research and are targeted to values important to young adults (e.g., autonomy, respect).
干预措施: Counter-marketing (Behavioral)
Health education messages
Participants will view a 10-week Instagram-delivered health education campaign about the health consequences of sugary drinks and processed snack foods. Messages are adapted from existing public health campaigns about these foods.
干预措施: Health education (Behavioral)
Control (neutral) messages
Participants will view a 10-week Instagram-delivered campaign about fire and home safety, a topic unrelated to diet. Messages are adapted from existing public health campaigns about these issues.
干预措施: Control (neutral) messages (Behavioral)
结局指标
主要结局
Diet quality (Healthy Eating Index-2020 score)
时间窗: At 0-months (baseline), 3-months (immediately post- intervention), and 9-months (6-months post-intervention)
Overall diet quality calculated from up to two unannounced, nonconsecutive 24-hour dietary recalls (1 weekend day, 1 weekday) collected via NCI's Automated Self-Administered 24-Hour Dietary Assessment Tool (ASA24) at each time point. Healthy Eating Index-2020 scores reflect alignment with the US Dietary Guidelines for Americans; higher scores indicate healthier diet quality (i.e., greater intake of fruits, vegetables, whole grains, dairy, protein, and unsaturated fats and lower intake of saturated fat, sodium, added sugars, and refined grains).
次要结局
- Consumption of target food groups(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention))
- Internalized weight stigma(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention).)
- Disordered eating attitudes and behaviors(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention))
- Attitudes toward unhealthy food companies(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention))
- Perceived alignment of healthy eating with values(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention))
- Externalized weight stigma(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention))
- Attribution of individual responsibility for weight(At 0-months (baseline), 3-months (immediately post-intervention), and 9-months (6-months post-intervention))
研究者
Anna Grummon
Assistant Professor
Stanford University