Comparative Tests of Flu Vaccination Phone Messages

University of Michigan

Status: Completed

Conditions: Influenza, Human

Treatments: Behavioral: Accountability; Behavioral: Viral changes; Behavioral: Protect others; Behavioral: General intentions; Behavioral: Behavioral intentions

Study type: Interventional

Funder types: Other

Identifiers

NCT03332992

HUM00135995

Details and patient eligibility

About

This project is a partnership between Emmi Solutions, a private company that delivers health promotion messages to employees of client organizations, and the University of Michigan and affiliated academic investigators. In particular, Emmi sends out pre-recorded and interactive telephone calls on behalf of their healthcare clients to promote influenza vaccination each Fall. The collaboration will design various scripts (based on established risk communication, behavior change, and behavioral economic principles) to be pre-recorded and sent out on these calls on a randomized basis (with approval by client organizations), with the number of arms to vary based on the size of each client's participant list (to ensure sufficient statistical power within each client's sample). Emmi will deliver the calls and track individual responses to questions posed during the call. Emmi will then provide a de-identified dataset to the academic research team for analysis to determine whether any scripts provided greater or lesser effects to people's their motivations to get a flu vaccination.

Enrollment: 7,206 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Patient of client organizations of Emmi Solutions
• Provided a phone number to their care team

Exclusion criteria

Trial design

Primary purpose: Health Services Research

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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7,206 participants in 6 patient groups

Viral changes + General intentions

Experimental group

Description:

Script language discusses a) that previous years' shots do not protect against current year influenza (viral changes) and b) poses a general question asking whether the respondent intends to get a flu shot (general intentions).

Treatment:

Behavioral: General intentions

Behavioral: Viral changes

Viral changes + Behavioral intentions

Experimental group

Description:

Script language discusses a) that previous years' shots do not protect against current year influenza (viral changes) and b) poses a question asking when / where the respondent will get a flu shot (behavioral intention).

Treatment:

Behavioral: Behavioral intentions

Behavioral: Viral changes

Viral changes + Accountability

Experimental group

Description:

Script language discusses a) that previous years' shots do not protect against current year influenza (viral changes) and b) poses a question that implies the patient's care team will be notified of intent to vaccinate (accountability to providers).

Treatment:

Behavioral: Viral changes

Behavioral: Accountability

Protect others + General intentions

Experimental group

Description:

Script language discusses a) that getting the flu shot protects others who can get particularly sick (protect others) and b) poses a general question asking whether the respondent intends to get a flu shot (general intentions).

Treatment:

Behavioral: Protect others

Behavioral: General intentions

Protect others + Behavioral intentions

Experimental group

Description:

Script language discusses a) that getting the flu shot protects others who can get particularly sick (protect others) and b) poses a question asking when / where the respondent will get a flu shot (behavioral intention).

Treatment:

Behavioral: Behavioral intentions

Behavioral: Protect others

Protect others + Accountability

Experimental group

Description:

Script language discusses a) that getting the flu shot protects others who can get particularly sick (protect others) and b) poses a question that implies the patient's care team will be notified of intent to vaccinate (accountability to providers).

Treatment:

Behavioral: Protect others

Behavioral: Accountability