Medical Information Only. Always consult your healthcare provider before enrolling in any clinical trial.
NCT05586204 · ClinicalTrials.gov registry record · NA
Boost Intentions and Facilitate Action to Promote COVID-19 Booster Take-up
A NA study, sponsored by University of California, Los Angeles.
- Completed
- Registry status
- NA
- Development phase
- 154,977
- Enrollment target
NCT05586204: Completed NA study, sponsored by University of California, Los Angeles.
NCT05586204 is a NA study that has completed, run by University of California, Los Angeles. The registered enrollment target is 154,977 participants, above the 1,401-participant average among 58,714 other NA trials with a reported enrollment target (10962% higher). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT05586204, a NA study, has completed, sponsored by University of California, Los Angeles.
- COMPLETED
- Registry status
- NA
- Development phase
- 154,977 participants
- Enrollment target
Study Summary
This is a prospective randomized clinical trial evaluating how behaviorally-informed outreach text messages affect the take-up of bivalent COVID-19 booster. The investigators will test the impact of sending text reminders as well as the importance of elevating vaccination intentions, facilitating action, and their combination.
Primary Outcome
Whether people receive the bivalent booster at any location reporting to the California Immunization Registry (CAIR)
Interventions
- BEHAVIORAL Eligibility reminder
- BEHAVIORAL Link to a narrow set of vaccine venues
- BEHAVIORAL Link to a broad set of vaccine venues
- BEHAVIORAL Doctors' recommendation and value of vaccine
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 154,977 participants |
| Start Date | 2022-10-18 |
| Est. Completion | 2023-12-31 |
| Phase | NA |
What the finished NCT05586204 record still lists
NCT05586204 is an interventional study that assigns participants to a tested intervention. Its 154,977 participants enrollment target places it among the larger protocols in the corpus, above the 1,401-participant average among 58,714 other NA trials with a reported enrollment target (10962% higher).
The record links to 0 conditions, and to 4 interventions - of which Eligibility reminder is the first listed.
NCT05586204 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT05586204 about?
NCT05586204 is a clinical study titled "Boost Intentions and Facilitate Action to Promote COVID-19 Booster Take-up". This is a prospective randomized clinical trial evaluating how behaviorally-informed outreach text messages affect the take-up of bivalent COVID-19 booster. The investigators will test the impact of sending text reminders as well as the importance of elevating vaccination intentions, facilitating ac...
What is the current status of trial NCT05586204?
This trial is currently completed. It is a NA study. The enrollment target is 154,977 participants. The study started on 2022-10-18. Estimated completion is 2023-12-31.
What interventions are being tested in trial NCT05586204?
The interventions under investigation include: Eligibility reminder (BEHAVIORAL), Link to a narrow set of vaccine venues (BEHAVIORAL), Link to a broad set of vaccine venues (BEHAVIORAL), Doctors' recommendation and value of vaccine (BEHAVIORAL).
Who is sponsoring clinical trial NCT05586204?
This trial is sponsored by University of California, Los Angeles, which has 897 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT05586204's enrollment target sits among peer trials
154,977 1st of 2000 higher than 2,000 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
Nationwide trials with similar profiles
Cross-condition peers matched on enrollment target and registry start date, not the same-condition list above.
Similar enrollment target
- NCT06917339 · 156,000 participants
Retrospective Analyses of TrakStar Database
- NCT06232551 · 152,000 participants · NA
Alerting Providers at Patient Hospital Discharge to Consider Prescribing Rivaroxaban to Reduce Venous Thromboembolism
- NCT05994482 · 130,000 participants
Surveillance Colonoscopy in Older Adults: The SurvOlderAdults Study
- NCT06090578 · 180,000 participants · NA
TabCAT Brain Health Assessment in Primary Care
Similar registry start date
- NCT05962346 · started 2026-12 · NA
Fetal Endoscopic Tracheal Occlusion for Congenital Diaphragmatic Hernia
- NCT07125183 · started 2026-12 · Phase 2
Study on Efficacy and Tolerability of Weekly Doxorubicin in Elderly Patients With Advanced or Metastatic Leiomyosarcoma
- NCT07292298 · started 2026-11 · Phase 2
Phase 2 Single-Arm Rectal Cancer Brachytherapy for Patients With Low-Lying Residual Adenocarcinoma After Total Neoadjuvant Therapy to Improve Organ Preservation Rates
- NCT04263285 · started 2026-10 · NA
Treatment of Depression Post-SCI