Memory for Flu Facts and Myths and Effects on Vaccine Intentions

This study has been completed.
Sponsor:
Information provided by:
University of Michigan
ClinicalTrials.gov Identifier:
NCT00296270
First received: February 23, 2006
Last updated: NA
Last verified: February 2006
History: No changes posted
  Purpose

Objectives: To determine whether people systematically misremember the “myths” (false information) as true, and to assess effects on perceptions of risk and behavioral intentions.


Condition Intervention
Influenza Vaccines
Behavioral: Memory for truth

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Factorial Assignment
Masking: Double-Blind
Primary Purpose: Educational/Counseling/Training
Official Title: "Myths and Facts" About the Flu: Health Education Campaigns Can Reduce Vaccination Intentions

Resource links provided by NLM:


Further study details as provided by University of Michigan:

Primary Outcome Measures:
  • Memory for truth of information in a flyer.

Secondary Outcome Measures:
  • Intention to get flu vaccine in upcoming season.

Estimated Enrollment: 175
Study Start Date: March 2005
Estimated Study Completion Date: June 2005
Detailed Description:

Public information campaigns often warn people about false and unreliable medical claims by juxtaposing “myths” and “facts.” The effectiveness of such communications has rarely been assessed. We assessed whether people systematically misremember the “myths” (false information) as true, and to assess effects on perceptions of risk and behavioral intentions.

In an experimental study, participants read either a published CDC flyer on “Facts and Myths” about the flu vaccine, or a “Facts Only” version; a separate control group read no flyer. Participants completed the outcome measures either immediately or after 30 minutes.

Primary measures were memory for information about the flu presented in the flyer, ratings of perceived risks associated with the flu, and personal intentions to get vaccinated in the upcoming season.

After a delay of 30 minutes, participants who read the “Facts and Myths” flyer systematically misremembered myths as facts. Both versions of the flyer had the immediate effect of increasing intentions to get a flu vaccine, compared to the control group. After 30 minutes, however, participants who read the “Facts and Myths” flyer reported lower intentions to get vaccinated, compared to those who read the same flyer with no delay, and compared to all participants who read the “Facts Only” flyer.

In sum, people show a bias to think that incompletely remembered information is true, turning “myths” into “facts.” Hence public information campaigns should emphasize information that is true. Repeating false information, even as a warning, can create the unintended consequence of belief in the information.

  Eligibility

Ages Eligible for Study:   18 Years to 26 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Must be able to read and write fluent English

Exclusion Criteria:

-

  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00296270

Locations
United States, Michigan
University of Michigan
Ann Arbor, Michigan, United States, 48109
Canada, Ontario
Rotman School of Management, University of Toronto
Toronto, Ontario, Canada, M5S 3E6
Sponsors and Collaborators
University of Michigan
Investigators
Principal Investigator: Ian Skurnik, PhD Rotman School of Management, University of Toronto
  More Information

No publications provided

ClinicalTrials.gov Identifier: NCT00296270     History of Changes
Other Study ID Numbers: RIR13914
Study First Received: February 23, 2006
Last Updated: February 23, 2006
Health Authority: Canada: Institutional Review Board
United States: Institutional Review Board

Additional relevant MeSH terms:
Influenza, Human
Orthomyxoviridae Infections
RNA Virus Infections
Virus Diseases
Respiratory Tract Infections
Respiratory Tract Diseases

ClinicalTrials.gov processed this record on August 20, 2014