COVID-19 Vaccine Messaging, Part 1
Brief Summary:
This study tests different messages about vaccinating against COVID-19 once the vaccine becomes available. Participants are randomized to 1 of 12 arms, with one control arm and one baseline arm. We will compare the reported willingness to get a COVID-19 vaccine at 3 and 6 months of it becoming available between the 10 intervention arms to the 2 control arms.
Study participants are recruited online by Lucid, which matches census based sampling in online recruitment.
Study Type : Interventional (Clinical Trial)
Actual Enrollment : 4000 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: In this study, 2/15 of participants will be assigned to a control message (bird feeding passage), 3/15 of sample to a baseline vaccine message, and 1/15 to each of the 10 other treatment arms.
Masking: None (Open Label)
Primary Purpose: Other
Official Title: Persuasive Messages for COVID-19 Vaccine Uptake: a Randomized Controlled Trial, Part 1
Actual Study Start Date : July 3, 2020
Actual Primary Completion Date : July 8, 2020
Actual Study Completion Date : July 8, 2020
Excerpt:
Primary Outcome Measures :
Intention to get COVID-19 vaccine [ Time Frame: Immediately after intervention, in the same survey in which the intervention message is provided ]
This is a self reported measure, immediately after the intervention message, of the likelihood of getting a COVID-19 vaccination within 3 months and then 6 months of it becoming available. During analysis, responses among those assigned to different intervention messages will be compared to those in the control group.
Vaccination
COVID-19
Other: Control message
Other: Baseline message
Other: Personal freedom message
Other: Economic freedom message
Other: Self-interest message
Other: Community interest message
Other: Economic benefit message
Other: Guilt message
Other: Embarrassment message
Other: Anger message
Other: Trust in science message
Other: Not bravery message
Outcome Measures
Secondary Outcome Measures :
Vaccine confidence scale [ Time Frame: Immediately after intervention, in the same survey in which the intervention message is provided ]
This is a validated scale. This scale will be used to assess the impact of the messages on vaccine confidence. (Outcome assessed only for the half of the sample that answers these items post-treatment)
Persuade others item [ Time Frame: Immediately after intervention, in the same survey in which the intervention message is provided ]
This is a measure of a willingness to persuade others to take the COVID-19 vaccine.
Fear of those who have not been vaccinated [ Time Frame: Immediately after intervention, in the same survey in which the intervention message is provided ]
This is a measure of a comfort with an unvaccinated individual visiting an elderly friend after a vaccine becomes available
Social judgment of those who do not vaccinate [ Time Frame: Immediately after intervention, in the same survey in which the intervention message is provided ]
This is a scale composed of 4 items measuring the trustworthiness, selfishness, likeableness, and competence of those who choose not to get vaccinated after a vaccine becomes available
https://clinicaltrials.gov/ct2/show/NCT04460703