Mail Outreach To Increase Vaccination Acceptance Through Engagement
Public ClinicalTrials.gov record NCT02243774. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The aim of this study is to determine whether receiving a core letter signed by the Surgeon General or the Director of the National Vaccine Program that provides only information about influenza, or a core letter signed by the Surgeon General with an added basic or enhanced implementation prompt, will increase rates of influenza vaccination among Medicare beneficiaries when compared to a control group.
Study identification
- NCT ID
- NCT02243774
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Not applicable
- Enrollment
- 228,000 participants
Conditions and interventions
Conditions
Interventions
- Core letter signed by Surgeon General Behavioral
- Core letter signed by the Director of the National Vaccine Program Behavioral
- Core letter signed by Surgeon General + implementation prompt Behavioral
- Core letter signed by SG + enhanced implementation prompt Behavioral
Behavioral
Eligibility (public fields only)
- Age range
- 66 Years and older
- Sex
- All
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Aug 31, 2014
- Primary completion
- Dec 31, 2014
- Completion
- Aug 31, 2015
- Last update posted
- Jul 11, 2017
2014 – 2015
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Centers for Medicare & Medicaid Services | Baltimore | Maryland | 21244 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT02243774, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 11, 2017 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT02243774 live on ClinicalTrials.gov.