Vaccinating households against COVID-19: Experimental and Survey evidence from Zambia

Last registered on April 17, 2022
View Trial History

Pre-Trial

Trial Information

General Information

Title
Vaccinating households against COVID-19: Experimental and Survey evidence from Zambia
RCT ID
AEARCTR-0009027
Initial registration date
February 24, 2022

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
February 25, 2022, 12:32 PM EST

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

Last updated
April 17, 2022, 5:14 PM EDT

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

Locations

Country
Zambia
Region

Primary Investigator

Name
Christopher Hoy
Affiliation
Contact Primary Investigator

Other Primary Investigator(s)

Additional Trial Information

Status
In development
Start date
2022-02-28
End date
2022-12-31
Keywords
Health
Additional Keywords
COVID-19, Vaccine hesitancy, vaccine education, low-income countries
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
This randomized survey experiment examines how to increase people's willingness to get a COVID-19 vaccine and the extent to which this is varies based on household dynamics.
External Link(s)

Registration Citation

Citation
Hoy, Christopher. 2022. "Vaccinating households against COVID-19: Experimental and Survey evidence from Zambia." AEA RCT Registry. April 17. https://doi.org/10.1257/rct.9027-2.1
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
Intervention Start Date
2022-03-03
Intervention End Date
2022-04-30

Primary Outcomes

Primary Outcomes (end points)
People’s willingness to get vaccinated (see survey instrument in documents)
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Respondents will be randomly allocated to one of the following three groups:
- "vaccine effectiveness" treatment group
- "protecting household" treatment group
- control group (they receive no information)

Details are in the survey instrument, which is available in the documents section of this registration.
Experimental Design Details
Randomization Method
Randomization completed using virtual labs software.
Randomization Unit
individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
N/A
Sample size: planned number of observations
3000 respondents
Sample size (or number of clusters) by treatment arms
1000 respondents
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

Documents

Document Name
Survey instrument
Document Type
survey_instrument
Document Description
File
Survey instrument

MD5: 3931b6406ed3cb5e149e1ca34b96a48a

SHA1: 12109060e99d4d37b80290c4f25ed50f6ed28aeb

Uploaded At: March 01, 2022

IRB

Institutional Review Boards (IRBs)

IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

Analysis Plan Documents

220302_Hypotheses.docx

MD5: 5cfa6034c87c00ab86623a86ae164ae2

SHA1: 5d202f2b74de56ef640e86fc35171d4db51150a6

Uploaded At: March 01, 2022

Post-Trial

Post Trial Information

Study Withdrawal

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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