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NCT05537441 · ClinicalTrials.gov registry record · NA
Precision Vaccine Promotion in Underserved Populations
A NA study, sponsored by University of Southern California.
- Completed
- Registry status
- NA
- Development phase
- 228,831
- Enrollment target
NCT05537441: Completed NA study, sponsored by University of Southern California.
NCT05537441 is a NA study that has completed, run by University of Southern California. The registered enrollment target is 228,831 participants, above the 1,400-participant average among 58,714 other NA trials with a reported enrollment target (16245% higher). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT05537441, a NA study, has completed, sponsored by University of Southern California.
- COMPLETED
- Registry status
- NA
- Development phase
- 228,831 participants
- Enrollment target
Study Summary
Previous studies have shown that low-cost, behavioral nudges through texting can increase influenza vaccination uptake compared to usual care. However, there are limited studies that evaluate the effect of decreasing barriers to scheduling, especially within safety net populations. The setting for this study, DHS, is the second largest public delivery system in the country and serves approximately half a million diverse patients that are eligible for vaccinations annually. This pilot study (one arm in a larger randomized controlled trial) will examine the effect of text messages highlighting MediCal health plan transportation resources (vs standard text messaging) on influenza vaccination rates in adults during the 2022-2023 flu season.
Primary Outcome
Number of Participants who received their influenza vaccination during the campaign period, as measured in the California Immunization Registry (CAIR2) to include vaccinations occurring both inside and outside the LADHS system. We assessed baseline vaccination status at the beginning of the flu season and excluded individuals who already received their vaccination.
Interventions
- BEHAVIORAL Text messaging
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 228,831 participants |
| Start Date | 2022-09-22 |
| Est. Completion | 2023-06-01 |
| Phase | NA |
What the finished NCT05537441 record still lists
NCT05537441 is an interventional study that assigns participants to a tested intervention. Its 228,831 participants enrollment target places it among the larger protocols in the corpus, above the 1,400-participant average among 58,714 other NA trials with a reported enrollment target (16245% higher).
The record links to 0 conditions, and to 1 intervention - of which Text messaging is the first listed.
NCT05537441 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT05537441 about?
NCT05537441 is a clinical study titled "Precision Vaccine Promotion in Underserved Populations". Previous studies have shown that low-cost, behavioral nudges through texting can increase influenza vaccination uptake compared to usual care. However, there are limited studies that evaluate the effect of decreasing barriers to scheduling, especially within safety net populations. The setting for t...
What is the current status of trial NCT05537441?
This trial is currently completed. It is a NA study. The enrollment target is 228,831 participants. The study started on 2022-09-22. Estimated completion is 2023-06-01.
What interventions are being tested in trial NCT05537441?
The interventions under investigation include: Text messaging (BEHAVIORAL).
Who is sponsoring clinical trial NCT05537441?
This trial is sponsored by University of Southern California, which has 617 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT05537441's enrollment target sits among peer trials
228,831 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
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