Determinants of COVID Vaccine Uptake
Last registered on June 18, 2021

Pre-Trial

Trial Information
General Information
Title
Determinants of COVID Vaccine Uptake
RCT ID
AEARCTR-0007768
Initial registration date
June 04, 2021
Last updated
June 18, 2021 1:58 PM EDT
Location(s)

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Primary Investigator
Affiliation
Middlebury College
Other Primary Investigator(s)
PI Affiliation
Middlebury College
PI Affiliation
Middlebury College
Additional Trial Information
Status
On going
Start date
2021-05-12
End date
2021-12-31
Secondary IDs
Abstract
In this project, we will study whether information can affect COVID vaccine uptake. Specifically, we experimentally test the effect of two types of informational videos delivered by Black physicians. The first provide information about COVID 19 vaccine information including information on side effects and emergency use authorization. The second cover aspects relevant to Black populations, e.g.: whether Black people were involved in the development and testing of the vaccine. We test the effect on attitudes, intentions and vaccination rates.
External Link(s)
Registration Citation
Citation
Abel, Martin, Tanya Byker and Jeffrey Carpenter. 2021. "Determinants of COVID Vaccine Uptake." AEA RCT Registry. June 18. https://doi.org/10.1257/rct.7768-1.1.
Experimental Details
Interventions
Intervention(s)
See details in pre-analysis plan.
Intervention Start Date
2021-05-18
Intervention End Date
2021-07-31
Primary Outcomes
Primary Outcomes (end points)
Changes in attitudes / concerns related to the vaccines; Perception of the information; Information seeking; Vaccination rates (see details in PAP)
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We will recruit people online who are not yet vaccinated. We first administer a baseline survey. After one week, they are invited to another survey in which they are randomized into different information treatments. After one month, we conduct a follow up survey to measure outcomes incl. vaccination rates.
Experimental Design Details
Not available
Randomization Method
by computer
Randomization Unit
individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
0
Sample size: planned number of observations
1000
Sample size (or number of clusters) by treatment arms
White participants are equally divided between control and T1
Black participants are equally divided between control, T1, and T2
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Middlebury College IRB
IRB Approval Date
2021-03-26
IRB Approval Number
20-021
Analysis Plan

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