Mail Outreach To Increase Vaccination Acceptance Through Engagement (MOTIVATE)
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ClinicalTrials.gov Identifier: NCT02243774 |
Recruitment Status :
Completed
First Posted : September 18, 2014
Last Update Posted : July 12, 2017
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Condition or disease | Intervention/treatment | Phase |
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Influenza, Human Influenza Human Flu | Behavioral: 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 | Not Applicable |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 228000 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | Mail Outreach To Increase Vaccination Acceptance Through Engagement |
Study Start Date : | September 2014 |
Actual Primary Completion Date : | January 2015 |
Actual Study Completion Date : | September 2015 |

Arm | Intervention/treatment |
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No Intervention: No letter
Individuals randomized to the control group who will not receive any of the four letters
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Experimental: Core letter signed by Surgeon General
Individuals randomized to receive only a core letter signed by the Surgeon General
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Behavioral: Core letter signed by Surgeon General
The core letter provides information about influenza and the risks associated with it, incorporating a number of behavioral insights. All four letters evaluated in this study will contain the same tops and bodies that are included in the core letter, but the signature and P.S. tag region will differ among the various intervention groups. In this intervention, the core letter is signed by and includes a picture of the Surgeon General. The letter ends after the signature line and the space beneath the signature line is left blank where a P.S. tag region could be appended. |
Experimental: Core letter signed by Director of the National Vaccine Program
Individuals randomized to receive only a core letter signed by the Director of the National Vaccine Program
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Behavioral: Core letter signed by the Director of the National Vaccine Program
The core letter is signed by and includes a picture of the Director of the National Vaccine Program. The letter ends after the signature line and the space beneath the signature line is left blank where a P.S. tag region could be appended. |
Experimental: Core letter signed by Surgeon General + implementation prompt
Individuals randomized to receive a core letter signed by the Surgeon General with an implementation intention prompt added in an appended P.S. tag region below the signature line
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Behavioral: Core letter signed by Surgeon General + implementation prompt
The core letter is signed by and includes a picture of the Surgeon General. Below the signature line of the core letter, an implementation intention prompt is provided in the P.S. tag region that invites the recipient to write in the day of week, month, day, and time at which he or she plans to get vaccinated. |
Experimental: Core letter signed by SG + enhanced implementation prompt
Individuals randomized to receive a core letter signed by the Surgeon General (SG) with an enhanced implementation intention prompt added in an appended P.S. tag region below the signature line
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Behavioral: Core letter signed by SG + enhanced implementation prompt
The core letter is signed by and includes a picture of the Surgeon General (SG). Below the signature line of the core letter, an enhanced implementation intention prompt is provided in the P.S. tag region that prompts recipients to "decide now" - by checking one of two boxes - indicating they will or will not get vaccinated. The options use language that highlights the losses incumbent in refusing to vaccinate. In addition, an implementation intention prompt is embedded into the checkbox for indicating a choice to be vaccinated. |
- Number of study participants who receive influenza vaccination [ Time Frame: 4 months ]Primary outcome of interest, determined from administrative claims data, will be the number of beneficiaries in each experimental group who receive an influenza vaccination between the date letter is mailed in September 2014 and January 31, 2015

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 66 Years and older (Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02243774
United States, Maryland | |
Centers for Medicare & Medicaid Services | |
Baltimore, Maryland, United States, 21244 |
Principal Investigator: | Niteesh K Choudhry, MD, PhD | Brigham and Women's Hospital/Harvard Medical School |
Responsible Party: | Niteesh K. Choudhry, MD, PhD, Associate Professor, Harvard Medical School, Brigham and Women's Hospital |
ClinicalTrials.gov Identifier: | NCT02243774 |
Other Study ID Numbers: |
2014-P-001821 |
First Posted: | September 18, 2014 Key Record Dates |
Last Update Posted: | July 12, 2017 |
Last Verified: | July 2017 |
Vaccination Immunization Randomized Controlled Trial Prevention & Control Preventive Measures |
Health Promotion Medicare Intention Prompts Letters |
Influenza, Human Respiratory Tract Infections Infections Orthomyxoviridae Infections |
RNA Virus Infections Virus Diseases Respiratory Tract Diseases |