Socioeconomic Position and the Effectiveness of Price Changes Based on Healthier and Less Healthy Food on Food Selection in a Simulated Out of Home Food Delivery App: a Randomised Controlled Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 3,464
- 试验地点
- 1
- 主要终点
- Healthier vs less healthy main meals ordered based on the Nutrient Profiling Model and total energy (kcal)
研究概览
简要总结
The goal of this randomised controlled trial is to compare taxation with subsidies to encourage healthier food choices in the out-of-home food sector. Participants will be asked to make hypothetical food choices in an online simulation study of a delivery app. Participants will be randomised into four different intervention groups:
- Price reduction (10%) on healthier foods
- Price increase (10%) to less healthy foods
- A combination of price reduction to healthier foods and price increase to less healthy foods
- Existing price structure (i.e. control group)
The investigators will further examine effectiveness of these fiscal policies on healthy eating by socioeconomic position to understand whether these policies are equitable.
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
- Double (Participant, Investigator)
盲法说明
This study will be double-blinded, which means that both the participants and the researchers are not aware in which treatment group participants are assigned to.
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Currently reside in the United Kingdom
- •Over the age of 18 years
- •Order take-away food for delivery at least once a month
- •Can complete the study on a laptop or desktop
排除标准
- •Any major dietary restrictions (vegan, dairy/lactose-free, gluten-free) or allergies (dairy, eggs, nuts, soy, wheat) that would limit the number of dishes they could choose in the meal selection task
研究组 & 干预措施
Price reduction on healthier foods
- Price reduction of 10% for healthier dishes (based on a score of less than 4 on the UK Nutrient Profile Model (NPM))
- Existing price structure for less healthy dishes (based on a score of 4 or higher on the UK NPM)
干预措施: Price reduction on healthier foods (Behavioral)
Price increase to less healthy foods
- Price increase of 10% for less healthy dishes (based on a score of less than 4 on the UK NPM)
- Existing price structure for healthier dishes (based on a score of 4 or higher on the UK NPM)
干预措施: Price increase to less healthy foods (Behavioral)
Combination of price reduction to healthier foods and price increase to less healthy foods
- Price reduction of 10% for healthier dishes (based on a score of less than 4 on the UK NPM)
- Price increase of 10% for less healthy dishes (based on a score of 4 or higher on the UK NPM)
干预措施: Combination of price reduction on healthier foods and price increase on less healthy foods (Behavioral)
Existing price structure (control)
- No changes in prices
干预措施: Control (Behavioral)
结局指标
主要结局
Healthier vs less healthy main meals ordered based on the Nutrient Profiling Model and total energy (kcal)
时间窗: immediately after food choice
Healthier vs less healthy main meals ordered
Total energy (kcal) ordered
时间窗: immediately after food choice
The total energy content of the total hypothetical food order
次要结局
- Total fat, saturated fat, salt and sugar ordered(immediately after food choice)
- Proportion of selecting healthier vs less healthy meal items of the total food order based on the Nutrient Profiling Model and total energy (kcal)(immediately after food choice)
研究者
Eric Robinson
Professor
University of Liverpool