Clinical trial NCT06442800: Impacts of Alcohol Warning Labels: An Online Experiment
Official title: Online Randomized Experiment Evaluating the Perceived Effectiveness of Alcohol Warning Labels
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Alcohol Drinking
Lead sponsor: University of North Carolina, Chapel Hill
Sponsor class: OTHER
Collaborators: name: National Institute on Alcohol Abuse and Alcoholism (NIAAA)
First posted: 2024-06-04
Enrollment: 1123
Sex: ALL
Minimum age (years): 21
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: PREVENTION

Brief summary: The goal of this experiment is to examine responses to alcohol warning messages about 10 different topics among US adult alcohol consumers. The main questions this experiment aims to answer are:

Which warning topics make alcohol consumers in the US want to drink less alcohol? Which warning topics remind alcohol consumers in the US of alcohol's harms? Which warning topics help alcohol consumers in the US learn something new? There will be a total of 20 alcohol messages, 2 messages for each of the 10 topics. For each topic, participants will be randomly assigned to 1 of the 2 messages so that they view a total of 10 alcohol messages. All 10 messages will be shown in random order. Participants will rate each message on how much it makes them want to drink less alcohol, reminds them that drinking can be harmful, and teaches them something new.

Detailed description: This study aims to determine which topics in alcohol warning labels are most effective at making US adults who consume alcohol want to drink less alcohol, which topics best remind consumers of alcohol's harms, and which topics are most likely to teach consumers something new. The survey research company NORC at the University of Chicago will recruit a sample of 1,000 US adults ages 21+ who consumed alcohol at least one time per week during the past 4 weeks.

Participants will complete a within-subjects online randomized experiment in which they view and rate messages shown on alcohol containers. Participants will rate each message on perceived message effectiveness (primary outcome), reminding of alcohol's harms (secondary outcome), and learning something new (secondary outcome). These tasks will be repeated for 10 messages, each with a different topic. There will be 9 warning topics (i.e., topics about alcohol's harms) and 1 control topic (i.e., neutral topic not about alcohol's harms). In this within-subjects experiment, the survey will present the topics in random order and participants will view 1 of 2 messages for each topic.

Eligibility criteria: Inclusion Criteria:

* Age 21 and older
* Reside in the United States
* Able to complete a survey in English
* Consumed alcohol at least once per week during the past 4 weeks

Exclusion Criteria:

* Under the age of 21
* Reside outside of the United States
* Unable to complete a survey in English
* Consumed alcohol less than once per week during the past 4 weeks

Primary outcomes:
measure: Perceived message effectiveness
timeFrame: Assessed during one-time 15-minute online study survey
Secondary outcomes:
measure: Reminding of alcohol's harms
timeFrame: Assessed during one-time 15-minute online study survey
measure: Learning something new
timeFrame: Assessed during one-time 15-minute online study survey
Other outcomes:
Locations:
city: Chapel Hill
country: United States
facility: University of North Carolina
state: North Carolina
Study officials:
affiliation: University of North Carolina, Chapel Hill
name: Marissa Hall, PhD
role: PRINCIPAL_INVESTIGATOR
affiliation: Stanford University
name: Anna Grummon, PhD
role: PRINCIPAL_INVESTIGATOR
References: