The Effect of Fact Versus Myth Messages on Receipt of Influenza Vaccination

October 25, 2023 updated by: Northwestern University
The purpose of this study is to evaluate whether message design of educational materials increases vaccination rates among participants.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

125

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern Medical Faculty Foundation General Internal Medicine and Geriatric Clinics

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

50 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Participant must have a scheduled appointment at least 6 weeks in advance in either the GIM or Geriatrics clinics at NMFF.
  • Participant must be a patient of Northwestern Medical Faculty Foundation.
  • Participant does not intend to receive the influenza vaccine.

Exclusion Criteria:

  • Participant has a diagnosis of Alzheimer's Disease or Dementia
  • Participant has received an influenza vaccination during either the last influenza season or the current.
  • The scheduled visit is the participant's first time being seen by this doctor (appointment is to establish care in the clinic).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Fact Only
The educational message used will contain facts only.
Behavioral: Fact Only Education Message
Participants randomized to this intervention will receive an educational brochure listing the facts of the influenza vaccine.
Other Names:
  • Fact Only
Experimental: Fact and Myth
The educational material seen by this arm will contain facts and myths only.
Behavioral: Fact and Myth Educational Message
Participants randomized to this intervention will receive an educational brochure listing the facts and myths of the influenza vaccine.
Other Names:
  • Fact & Myth
Experimental: Fact, Myth, Why
The educational material seen by this arm will contain myths, facts, and refutations of the myths.
Behavioral: Fact, Myth, Why Educational Message
Participants randomized to this intervention will receive an educational brochure listing the facts, myths, and refutation of the myths of the influenza vaccine.
Other Names:
  • Fact, Myth, Why
Placebo Comparator: Control
This arm will receive fact/myth educational materials originally developed and used by the CDC.
Behavioral: Control Educational Message
Participants randomized to this intervention will receive an educational brochure created and used by the CDC in a previous influenza season.
Other Names:
  • Control

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Influenza Vaccination
Time Frame: 1 week following randomization
The primary outcome is receipt of influenza vaccination at appointment directly following the post-test. A pre-test was completed by participants during a telephone interview that occurred approximately two weeks prior to a scheduled clinic appointment. The post-test was completed via an in-person interview by participants immediately prior to their scheduled appointment. That is, the participants met with the Research Assistant, completed the post-test, and then proceeded to see their physician for a previously scheduled office visit.
1 week following randomization

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Recall Accuracy
Time Frame: 1 week following receipt of message
Participants were given 8 statements about the flu/flu shot and asked to recall if they had seen the statement on the message they received via FedEx. Participants responded that statement had been "presented as a fact," "presented as a myth," "presented, but I don't recall if it was a fact or a myth," or "not presented." Participants scored 1 for each correct answer; 0 for each incorrect answer or for response "I don't recall." Recall accuracy was calculated among each message format, range for recall accuracy was 0 - 8 with 0 indicating no correct answers and 8 representing 100% accuracy. Thus units of measurement are "units on a scale" to represent participant scores out of 8 on the recall items.
1 week following receipt of message

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Northwestern University

Collaborators

National Institute on Aging (NIA)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2009

Primary Completion (Actual)

April 1, 2010

Study Completion (Actual)

April 1, 2010

Study Registration Dates

First Submitted

November 6, 2009

First Submitted That Met QC Criteria

November 6, 2009

First Posted (Estimated)

November 9, 2009

Study Record Updates

Last Update Posted (Actual)

October 30, 2023

Last Update Submitted That Met QC Criteria

October 25, 2023

Last Verified

October 1, 2023

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Fact versus Myth Messages
  • 1R21AG031470-01 (U.S. NIH Grant/Contract)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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