Impact of Providing Health Information on Alcohol Labels in a Real-World Setting: a Randomized Controlled Trial Among Supermarket Customers in Barcelona
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 1,410
- 试验地点
- 1
- 主要终点
- Knowledge of alcohol causing cancer
研究概览
简要总结
The goal of this randomized controlled trial is to evaluate the impact of health information labeling on alcohol-related knowledge and behaviors in adults purchasing alcohol in Barcelona, Spain. The main questions it aims to answer are:
- Does a label containing a cancer message have a larger impact on knowledge, behavior, intentions, risk perception, emotional response, product appeal and policy support compared to a responsibility label?
- Does the positioning of the label (front vs. back) on the alcohol container affect these outcomes?
Researchers will compare the impact of cancer message labels vs. responsibility labels and front vs. back positioning to see if there are differences in the primary outcome (knowledge of alcohol causing cancer) and secondary outcomes (behavior, intentions, risk perception, emotional response, and policy support).
Additionally, the study will provide insight in whether there is a testing effect of primary outcome pre-measurement by exposing only half of the sample to baseline question on knowledge of alcohol related harms.
Participants will:
- Be recruited in front of selected supermarkets in Barcelona after purchasing alcohol for their own consumption.
- Complete a baseline questionnaire.
- Receive a sticker containing a randomly assigned health message that will be applied to every alcohol beverage they have purchased.
- Receive an invitation to complete two follow-up surveys, one a week and one a month after the intervention.
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
- None
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
- •have just purchased at least one alcoholic beverage container for their own consumption
- •speak Spanish or Catalan
- •are 18 years or older
- •provide informed consent to participation
排除标准
- •all the purchased alcohol containers are too small for a label sticker to be affixed
研究组 & 干预措施
Responsibility message - front of the container / no pre-test
A sticker with a message to drink responsibly is applied to the front of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Responsibility message on alcohol label (Behavioral)
Responsibility message - front of the container / no pre-test
A sticker with a message to drink responsibly is applied to the front of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Front label (Behavioral)
Responsibility message - front of the container / no pre-test
A sticker with a message to drink responsibly is applied to the front of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: No outcome pre-testing (Other)
Responsibility message - back of the container / no pre-test
A sticker with a message to drink responsibly is applied to the back of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Responsibility message on alcohol label (Behavioral)
Responsibility message - back of the container / no pre-test
A sticker with a message to drink responsibly is applied to the back of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Back label (Behavioral)
Responsibility message - back of the container / no pre-test
A sticker with a message to drink responsibly is applied to the back of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: No outcome pre-testing (Other)
Cancer message - front of the container / no pre-test
A sticker with a message on alcohol causing cancer is applied to the front of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Alcohol health warning label - cancer (Behavioral)
Cancer message - front of the container / no pre-test
A sticker with a message on alcohol causing cancer is applied to the front of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Front label (Behavioral)
Cancer message - front of the container / no pre-test
A sticker with a message on alcohol causing cancer is applied to the front of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: No outcome pre-testing (Other)
Cancer message - back of the container / no pre-test
A sticker with a message on alcohol causing cancer is applied to the back of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Alcohol health warning label - cancer (Behavioral)
Cancer message - back of the container / no pre-test
A sticker with a message on alcohol causing cancer is applied to the back of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: Back label (Behavioral)
Cancer message - back of the container / no pre-test
A sticker with a message on alcohol causing cancer is applied to the back of the container.
There is no question on knowledge of alcohol related harms at baseline.
干预措施: No outcome pre-testing (Other)
Responsibility message - front of the container / pre-test
A sticker with a message to drink responsibly is applied to the front of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Responsibility message on alcohol label (Behavioral)
Responsibility message - front of the container / pre-test
A sticker with a message to drink responsibly is applied to the front of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Front label (Behavioral)
Responsibility message - front of the container / pre-test
A sticker with a message to drink responsibly is applied to the front of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Outcome pre-testing (Other)
Responsibility message - back of the container / pre-test
A sticker with a message to drink responsibly is applied to the back of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Responsibility message on alcohol label (Behavioral)
Responsibility message - back of the container / pre-test
A sticker with a message to drink responsibly is applied to the back of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Back label (Behavioral)
Responsibility message - back of the container / pre-test
A sticker with a message to drink responsibly is applied to the back of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Outcome pre-testing (Other)
Cancer message - front of the container / pre-test
A sticker with a message on alcohol causing cancer is applied to the front of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Alcohol health warning label - cancer (Behavioral)
Cancer message - front of the container / pre-test
A sticker with a message on alcohol causing cancer is applied to the front of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Front label (Behavioral)
Cancer message - front of the container / pre-test
A sticker with a message on alcohol causing cancer is applied to the front of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Outcome pre-testing (Other)
Cancer message - back of the container / pre-test
A sticker with a message on alcohol causing cancer is applied to the back of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Alcohol health warning label - cancer (Behavioral)
Cancer message - back of the container / pre-test
A sticker with a message on alcohol causing cancer is applied to the back of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Back label (Behavioral)
Cancer message - back of the container / pre-test
A sticker with a message on alcohol causing cancer is applied to the back of the container. There is a question on knowledge of alcohol related harms at baseline.
干预措施: Outcome pre-testing (Other)
结局指标
主要结局
Knowledge of alcohol causing cancer
时间窗: 1 week / 1 month
Knowledge will be assessed with the question "Which of the following diseases and conditions does alcohol consumption increase the risk of? (select all that apply)", with the possible choices being "Cancer", "Heart disease", "Respiratory disease", "Alcohol Use Disorder", "Injuries", "Diabetes" and "Liver disease" displayed randomly, and "I don't know" and "None" as exclusive options. If participants select "Cancer" as an outcome, a follow up question will ask: "Which of the following cancers do you think drinking alcohol increases the risk of? (select all that apply)", with "Female breast cancer", "Liver cancer", "Colon cancer", "Skin cancer", "Oral cancer", displayed randomly, and "I don't know" and "None" as exclusive options. The outcome will be dichotomous based on whether the participants correctly identify the link between alcohol and two cancers mentioned in the label: breast and colon cancer.
次要结局
- Behavioural intention(1 week / 1 month)
- Alcohol consumption behaviour(1 week / 1 month)
- Risk perception(1 week / 1 month)
- Emotional response to the labels(1 week)
- Support for alcohol policies(1 week / 1 month)
- Product appeal(1 week)
研究者
Daša Kokole
Principal Investigator
World Health Organization