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NCT04834726 · ClinicalTrials.gov registry record · NA
COVID-19 Vaccine Text Outreach
A NA study, sponsored by University of Pennsylvania.
- Completed
- Registry status
- NA
- Development phase
- 19,554
- Enrollment target
NCT04834726: Completed NA study, sponsored by University of Pennsylvania.
NCT04834726 is a NA study that has completed, run by University of Pennsylvania. The registered enrollment target is 19,554 participants, above the 1,403-participant average among 58,714 other NA trials with a reported enrollment target (1294% higher). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04834726, a NA study, has completed, sponsored by University of Pennsylvania.
- COMPLETED
- Registry status
- NA
- Development phase
- 19,554 participants
- Enrollment target
Study Summary
This project aims to evaluate different approaches to increase COVID-19 vaccine uptake among at-risk patients at Penn Medicine in an equitable and systematic manner through a centralized outreach program. The investigators will evaluate different text-based scheduling and messaging approaches informed by behavioral science to increase uptake among eligible patients, including the use of clinician endorsement, opt-out framing, and scarcity.
Primary Outcome
Percentage of patients who complete the first dose of the COVID vaccine within 1 month of initial outreach
Interventions
- BEHAVIORAL Standard Message
- BEHAVIORAL Clinician Endorsement
- BEHAVIORAL Opt-In (Call-Back)
- BEHAVIORAL Opt-in (In-Bound)
- BEHAVIORAL Scarcity
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 19,554 participants |
| Start Date | 2021-04-29 |
| Est. Completion | 2021-07-06 |
| Phase | NA |
What the finished NCT04834726 record still lists
NCT04834726 is an interventional study that assigns participants to a tested intervention. Its 19,554 participants enrollment target places it among the larger protocols in the corpus, above the 1,403-participant average among 58,714 other NA trials with a reported enrollment target (1294% higher).
The record links to 0 conditions, and to 5 interventions - of which Standard Message is the first listed.
NCT04834726 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04834726 about?
NCT04834726 is a clinical study titled "COVID-19 Vaccine Text Outreach". This project aims to evaluate different approaches to increase COVID-19 vaccine uptake among at-risk patients at Penn Medicine in an equitable and systematic manner through a centralized outreach program. The investigators will evaluate different text-based scheduling and messaging approaches inform...
What is the current status of trial NCT04834726?
This trial is currently completed. It is a NA study. The enrollment target is 19,554 participants. The study started on 2021-04-29. Estimated completion is 2021-07-06.
What interventions are being tested in trial NCT04834726?
The interventions under investigation include: Standard Message (BEHAVIORAL), Clinician Endorsement (BEHAVIORAL), Opt-In (Call-Back) (BEHAVIORAL), Opt-in (In-Bound) (BEHAVIORAL), Scarcity (BEHAVIORAL).
Who is sponsoring clinical trial NCT04834726?
This trial is sponsored by University of Pennsylvania, which has 1,423 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04834726's enrollment target sits among peer trials
19,554 11th of 2000 higher than 1,990 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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