Determinants of COVID Vaccine Uptake

Last registered on September 03, 2024
View Trial History

Pre-Trial

Trial Information

General Information

Title
Determinants of COVID Vaccine Uptake
RCT ID
AEARCTR-0007768
Initial registration date
June 04, 2021

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
June 04, 2021, 2:40 PM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
September 03, 2024, 1:02 PM EDT

Last updated is the most recent time when changes to the trial's registration were published.

Locations

Country
United States of America
Region

Primary Investigator

Name
Martin Abel
Affiliation
Middlebury College
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Tanya Byker
PI Affiliation
Middlebury College
Contact Investigator
PI Name
Jeffrey Carpenter
PI Affiliation
Middlebury College
Contact Investigator

Additional Trial Information

Status
Completed
Start date
2021-05-12
End date
2021-12-31
Keywords
Health
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
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. 2024. "Determinants of COVID Vaccine Uptake." AEA RCT Registry. September 03. https://doi.org/10.1257/rct.7768-1.2
Sponsors & Partners
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
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)
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Middlebury College IRB
IRB Approval Date
2021-03-26
IRB Approval Number
20-021
Analysis Plan

Analysis Plan Documents

Vaccine Hesitancy Analysis Plan 2

MD5: c495888a68a9f8ece9a53e3dd0a4f271

SHA1: 03355c6a8879600f59651e0310ac29d26918bae4

Uploaded At: June 18, 2021

Vaccine Hesitancy Analysis Plan

MD5: 47ce93dfa95c73be712cfcec42ba5c7b

SHA1: 14d3b98a346128e19235ad7fb0407060e9850dcb

Uploaded At: June 04, 2021

Post-Trial

Post Trial Information

Study Withdrawal

There is information in this trial unavailable to the public. Use the button below to request access.

Request Information

Intervention

Is the intervention completed?
No
Data Collection Complete
Data Publication

Data Publication

Is public data available?
No

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials