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NCT04110314 · ClinicalTrials.gov registry record · NA
Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2
A NA study, sponsored by University of California, Los Angeles.
- Completed
- Registry status
- NA
- Development phase
- 430,636
- Enrollment target
NCT04110314: Completed NA study, sponsored by University of California, Los Angeles.
NCT04110314 is a NA study that has completed, run by University of California, Los Angeles. The registered enrollment target is 430,636 participants, above the 1,396-participant average among 58,714 other NA trials with a reported enrollment target (30748% higher). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04110314, a NA study, has completed, sponsored by University of California, Los Angeles.
- COMPLETED
- Registry status
- NA
- Development phase
- 430,636 participants
- Enrollment target
Study Summary
This trial is taking place in Los Angeles, CA among patients from primary care practices within the UCLA Health System. Despite the Advisory Committee on Immunization Practices (ACIP) recommendation in 2010 that all people above 6 months of age should receive an annual flu vaccine, vaccination rates remain low. The investigators will assess the effectiveness of message-framing (gain-framed, loss-framed messages, no messages), as well as the effectiveness of a pre-commitment prompt (pre-commitment prompt, no prompt) asking about a patient's intention to get the influenza vaccination, using a 3 x 2 factorial design.
Primary Outcome
Receipt of the annual influenza vaccination (between 10/2/19 - 4/1/20) among index patients. Outcomes will be assessed via vaccine data extraction from the electronic health record and external claims and pharmacy data. Index patients will be randomly selected individuals within an included household, eligible for the following groups (\<18, 18-64 non-diabetic, 65+ non-diabetic, and 18+ diabetic). One index patient per group may be selected from each household. The index patients must also be
Interventions
- BEHAVIORAL Portal Reminders for Influenza Vaccination: Gain-framed
- BEHAVIORAL Portal Reminders for Influenza Vaccination: Loss-framed
- BEHAVIORAL Pre-commitment prompt
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 430,636 participants |
| Start Date | 2019-10-18 |
| Est. Completion | 2020-04-01 |
| Phase | NA |
What the finished NCT04110314 record still lists
NCT04110314 is an interventional study that assigns participants to a tested intervention. Its 430,636 participants enrollment target places it among the larger protocols in the corpus, above the 1,396-participant average among 58,714 other NA trials with a reported enrollment target (30748% higher).
The record links to 0 conditions, and to 3 interventions - of which Portal Reminders for Influenza Vaccination: Gain-framed is the first listed.
NCT04110314 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04110314 about?
NCT04110314 is a clinical study titled "Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2". This trial is taking place in Los Angeles, CA among patients from primary care practices within the UCLA Health System. Despite the Advisory Committee on Immunization Practices (ACIP) recommendation in 2010 that all people above 6 months of age should receive an annual flu vaccine, vaccination rate...
What is the current status of trial NCT04110314?
This trial is currently completed. It is a NA study. The enrollment target is 430,636 participants. The study started on 2019-10-18. Estimated completion is 2020-04-01.
What interventions are being tested in trial NCT04110314?
The interventions under investigation include: Portal Reminders for Influenza Vaccination: Gain-framed (BEHAVIORAL), Portal Reminders for Influenza Vaccination: Loss-framed (BEHAVIORAL), Pre-commitment prompt (BEHAVIORAL).
Who is sponsoring clinical trial NCT04110314?
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 NCT04110314's enrollment target sits among peer trials
430,636 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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