Discussing COVID-19 Vaccines in Private Facebook Groups
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The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT05422898 |
Recruitment Status :
Completed
First Posted : June 21, 2022
Last Update Posted : June 21, 2022
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Condition or disease | Intervention/treatment | Phase |
---|---|---|
COVID-19 | Behavioral: Gist messages on COVID-19 vaccination Behavioral: COVID-19 vaccine information | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 508 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Prevention |
Official Title: | Empathic Engagement With the COVID-19 Vaccine Hesitant in Private Facebook Groups |
Actual Study Start Date : | January 17, 2022 |
Actual Primary Completion Date : | April 4, 2022 |
Actual Study Completion Date : | April 4, 2022 |

Arm | Intervention/treatment |
---|---|
Experimental: Gist
Gist-based messages on COVID-19 vaccination and moderated group discussions in a private Facebook group
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Behavioral: Gist messages on COVID-19 vaccination
Participants will receive gist-based messages on COVID-19 vaccines and have their concerns addressed by a group moderator |
Placebo Comparator: Information
Link to Facebook COVID-19 Information Center
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Behavioral: COVID-19 vaccine information
Participants will receive a link to the Facebook COVID-19 Information Center via a private Facebook Group |
- Engagement and satisfaction with the program [ Time Frame: 4 weeks ]Engagement includes participation in the Facebook group; satisfaction=self-rated overall satisfaction with the program (7-point scale)
- Proportion of participants getting the COVID-19 vaccine [ Time Frame: 4 weeks ]self-reported vaccination status
- Change in COVID-19 vaccination intention [ Time Frame: 4 weeks ]Self-reported intention to get the COVID-19 vaccine (7-point scale)
- Change in intention to encourage others to get the COVID-19 vaccine [ Time Frame: 4 weeks ]Self-reported intention to encourage others to get the COVID-19 vaccine (7-point scale)
- Change in COVID-19 vaccine confidence [ Time Frame: 4 weeks ]Self-reported confidence in the COVID-19 vaccine (5-point scale)
- Change in general vaccine confidence [ Time Frame: 4 weeks ]Self-reported confidence in vaccines (7-point scale)
- Change in vaccine hesitancy [ Time Frame: 4 weeks ]Self-reported vaccine hesitancy (7-point scale

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- reside in the U.S.
- unvaccinated from COVID-19
- Use Facebook regularly (at least 1/day)
Exclusion Criteria:
- age <18 years
- do not reside in the U.S.
- vaccinated from COVID-19
- do not use Facebook regularly (at least 1/day)

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05422898
United States, District of Columbia | |
George Washington University | |
Washington, District of Columbia, United States, 20052 |
Responsible Party: | George Washington University |
ClinicalTrials.gov Identifier: | NCT05422898 |
Other Study ID Numbers: |
NCR213861 |
First Posted: | June 21, 2022 Key Record Dates |
Last Update Posted: | June 21, 2022 |
Last Verified: | June 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
vaccine hesitancy social media health behavior |
COVID-19 Pneumonia, Viral Pneumonia Respiratory Tract Infections Infections Virus Diseases |
Coronavirus Infections Coronaviridae Infections Nidovirales Infections RNA Virus Infections Lung Diseases Respiratory Tract Diseases |