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NCT04979416 · ClinicalTrials.gov registry record · NA
Video Messages and Vaccination Intention
A NA study of COVID-19 Vaccination, sponsored by University of Southern California.
- Completed
- Registry status
- NA
- Development phase
- 1,001
- Enrollment target
- 1
- Study location
NCT04979416: Completed NA study of COVID-19 Vaccination, sponsored by University of Southern California.
NCT04979416 is a NA study of COVID-19 Vaccination that has completed, run by University of Southern California. The registered enrollment target is 1,001 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (29% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04979416, a NA study of COVID-19 Vaccination, has completed, sponsored by University of Southern California.
- COMPLETED
- Registry status
- NA
- Development phase
- 1,001 participants
- Enrollment target
- 1
- Study location
Study Summary
This study uses an online panel survey to test the impact of video messages on stated likelihood of COVID-19 vaccination. Participants, who have self-identified as unvaccinated against COVID-19, are randomly assigned to either no video message or 1 of 3 video messages to encourage vaccine take-up. The key endpoint is a question about the likelihood of getting vaccinated in the next 30 days.
Primary Outcome
Probability of getting vaccinated in the next 30 days
Conditions Studied
Interventions
- BEHAVIORAL Video messages
Study Locations (1)
California
- USC - Los Angeles
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 1,001 participants |
| Start Date | 2021-07-21 |
| Est. Completion | 2021-07-22 |
| Phase | NA |
What the finished NCT04979416 record still lists
NCT04979416 is an interventional study that assigns participants to a tested intervention. Its 1,001 participants enrollment target places it among the larger protocols in the corpus, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (29% lower).
The record links to 1 condition, with COVID-19 Vaccination appearing as the primary indexed condition, and to 1 intervention - of which Video messages is the first listed.
NCT04979416 reports a single indexed study location in California.
Frequently Asked Questions
What is clinical trial NCT04979416 about?
NCT04979416 is a clinical study titled "Video Messages and Vaccination Intention". This study uses an online panel survey to test the impact of video messages on stated likelihood of COVID-19 vaccination. Participants, who have self-identified as unvaccinated against COVID-19, are randomly assigned to either no video message or 1 of 3 video messages to encourage vaccine take-up. T...
What is the current status of trial NCT04979416?
This trial is currently completed. It is a NA study. The enrollment target is 1,001 participants. The study started on 2021-07-21. Estimated completion is 2021-07-22.
What conditions does trial NCT04979416 study?
This clinical trial studies the following conditions: COVID-19 Vaccination.
What interventions are being tested in trial NCT04979416?
The interventions under investigation include: Video messages (BEHAVIORAL).
Who is sponsoring clinical trial NCT04979416?
This trial is sponsored by University of Southern California, which has 617 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT04979416 being conducted?
This trial has 1 study location across California. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
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Where NCT04979416's enrollment target sits among peer trials
1,001 106th of 2000 higher than 1,894 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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