Video Messages and Vaccination Intention
The Impact of Video Messaging on Vaccination Intention
1 other identifier
interventional
1,001
1 country
1
Brief Summary
This study uses an online panel survey to test the impact of video messages on stated likelihood of COVID-19 vaccination. Participants, who have self-identified as unvaccinated against COVID-19, are randomly assigned to either no video message or 1 of 3 video messages to encourage vaccine take-up. The key endpoint is a question about the likelihood of getting vaccinated in the next 30 days.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Jul 2021
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
July 14, 2021
CompletedStudy Start
First participant enrolled
July 21, 2021
CompletedPrimary Completion
Last participant's last visit for primary outcome
July 22, 2021
CompletedStudy Completion
Last participant's last visit for all outcomes
July 22, 2021
CompletedFirst Posted
Study publicly available on registry
July 28, 2021
CompletedDecember 10, 2021
December 1, 2021
1 day
July 14, 2021
December 6, 2021
Conditions
Outcome Measures
Primary Outcomes (1)
Vaccination intention
Probability of getting vaccinated in the next 30 days
30 days
Study Arms (4)
Control
NO INTERVENTIONNo video message
Video message 1
EXPERIMENTALVideo message 2
EXPERIMENTALVideo message 3
EXPERIMENTALInterventions
video messages aimed at increasing vaccination
Eligibility Criteria
You may qualify if:
- adults in the Prolific.co panel
- unvaccinated against COVID-19
You may not qualify if:
- indicated to Prolific.co that they have received a COVID-19 vaccination
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
USC
Los Angeles, California, 90089, United States
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- SINGLE
- Who Masked
- PARTICIPANT
- Masking Details
- Participants do not know if they are in control or treatment or the type of treatment.
- Purpose
- HEALTH SERVICES RESEARCH
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor
Study Record Dates
First Submitted
July 14, 2021
First Posted
July 28, 2021
Study Start
July 21, 2021
Primary Completion
July 22, 2021
Study Completion
July 22, 2021
Last Updated
December 10, 2021
Record last verified: 2021-12
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- STUDY PROTOCOL, ANALYTIC CODE
Deidentified data will be shared after/concurrent with publication.