Tailoring of Vaccine-Focused Messages: Disease Salience
NCT ID: NCT03002324
Last Updated: 2017-05-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
1320 participants
INTERVENTIONAL
2017-01-31
2017-05-01
Brief Summary
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The participant's vaccine beliefs and intent to vaccinate will be assessed through an online survey at baseline. Two weeks later, participants will be randomized to view one of the three messages: the current CDC message, the cervical cancer framed message, or a non-vaccine related control message. Immediately afterwards, vaccine beliefs and intent to vaccinate will be assessed to determine the impact of the message.
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Detailed Description
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Parental decision to vaccinate their children, specifically with the HPV vaccine, can be tied to multiple constructs of the Health Belief Model. These include perceived susceptibility of HPV infection (is my child at risk of infection), perceived benefit, and perceived severity (of disease, and of vaccine related adverse events). This would suggest that messaging surrounding the HPV vaccination should be highly salient within these constructs. The current message tied to the HPV vaccine presented by the Centers for Disease Control (CDC) has a focus on HPV as an infection and is clinical in nature. In a randomized trial, parents given information about HPV were no more likely to be accepting of an HPV vaccine and no more likely to get their child vaccinated. Based on this literature, the researchers hypothesize that reframing the message to promote HPV vaccination as a means of protection against cervical cancer will impact intent to vaccinate among parents of adolescent females (aged 11-17 years old).
In the first phase of this study the researchers assessed how appealing to different moral foundations impacted attitudes towards vaccination and intent to vaccinate. For this phase of this study, the researchers will conduct a 3-arm randomized trial to compare the current CDC HPV, a cervical cancer focused message developed by the study team, and a non-vaccine related control passage among parents of adolescent females. The goal of the trial will be to determine if the new cervical cancer framed message has an increased impact on intent to have daughters receive the HPV vaccine over the trial period as compared to the current CDC message. Additionally, the researchers will examine the impact both the CDC message and the new message have on intent to vaccinate when compared to the non-vaccine related control message.
The participant's vaccine beliefs and intent to vaccinate will be assessed through an online survey at baseline. Two weeks later, participants will be randomized to view one of the three messages: the current CDC message, the cervical cancer framed message, or a non-vaccine related control message. Immediately afterwards, vaccine beliefs and intent to vaccinate will be assessed to determine the impact of the message.
Conditions
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Study Design
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RANDOMIZED
PARALLEL
OTHER
NONE
Study Groups
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Current CDC Message Arm
Participants randomized to this arm will receive a message developed to directly follow the current message on the CDC's website.
Baseline Survey
The baseline survey is a combination of the Vaccine Confidence Scale, and a short form of the Parents' Attitudes about Childhood Vaccines (PACV) Scale. Participants will be asked an additional 10 questions developed as a part of a behavioral phenotyping questionnaire to assess behavioral biases at baseline within the study population. Demographic information and intent to vaccinate will also be collected.
Current CDC Message
Participants randomized to the current CDC message arm will read a message taken almost directly from the CDC Vaccine Information Sheet (VIS) on HPV. This message was minimally altered for length and clarity.
Post-Intervention Survey
The immediate post-intervention survey will include questions from the Vaccine Confidence Scale and the PACV short scale. Intent to vaccinate will be assessed.
Cervical Cancer Message Arm
Participants randomized to this arm will receive a message focused on cervical cancer risks and prevention and framed to highlight perceived susceptibility, perceived benefit, and self-efficacy.
Baseline Survey
The baseline survey is a combination of the Vaccine Confidence Scale, and a short form of the Parents' Attitudes about Childhood Vaccines (PACV) Scale. Participants will be asked an additional 10 questions developed as a part of a behavioral phenotyping questionnaire to assess behavioral biases at baseline within the study population. Demographic information and intent to vaccinate will also be collected.
Cervical Cancer Message
Participants randomized to the cervical cancer messaging arm will receive a message developed by the study team to appeal tenants of the Health Belief Model (self-efficacy, perceived benefit) and on the purity tenant of the moral foundations theory.
Post-Intervention Survey
The immediate post-intervention survey will include questions from the Vaccine Confidence Scale and the PACV short scale. Intent to vaccinate will be assessed.
Control Message
Participants randomized to the control arm will be provided with a short message about the costs and benefits of bird feeding.
Baseline Survey
The baseline survey is a combination of the Vaccine Confidence Scale, and a short form of the Parents' Attitudes about Childhood Vaccines (PACV) Scale. Participants will be asked an additional 10 questions developed as a part of a behavioral phenotyping questionnaire to assess behavioral biases at baseline within the study population. Demographic information and intent to vaccinate will also be collected.
Control Message
Participants randomized to the non-vaccine related control arm will read a bird-feeding passage.
Post-Intervention Survey
The immediate post-intervention survey will include questions from the Vaccine Confidence Scale and the PACV short scale. Intent to vaccinate will be assessed.
Interventions
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Baseline Survey
The baseline survey is a combination of the Vaccine Confidence Scale, and a short form of the Parents' Attitudes about Childhood Vaccines (PACV) Scale. Participants will be asked an additional 10 questions developed as a part of a behavioral phenotyping questionnaire to assess behavioral biases at baseline within the study population. Demographic information and intent to vaccinate will also be collected.
Current CDC Message
Participants randomized to the current CDC message arm will read a message taken almost directly from the CDC Vaccine Information Sheet (VIS) on HPV. This message was minimally altered for length and clarity.
Cervical Cancer Message
Participants randomized to the cervical cancer messaging arm will receive a message developed by the study team to appeal tenants of the Health Belief Model (self-efficacy, perceived benefit) and on the purity tenant of the moral foundations theory.
Control Message
Participants randomized to the non-vaccine related control arm will read a bird-feeding passage.
Post-Intervention Survey
The immediate post-intervention survey will include questions from the Vaccine Confidence Scale and the PACV short scale. Intent to vaccinate will be assessed.
Eligibility Criteria
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Inclusion Criteria
* Reside in the United States
Exclusion Criteria
18 Years
ALL
Yes
Sponsors
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Emory University
OTHER
Responsible Party
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Saad B. Omer, MBBS, MPH, PhD
Professor
Principal Investigators
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Saad B Omer, BBS, MPH, PhD
Role: PRINCIPAL_INVESTIGATOR
Emory University
Locations
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Emory University
Atlanta, Georgia, United States
Countries
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References
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Porter RM, Amin AB, Bednarczyk RA, Omer SB. Cancer-salient messaging for Human Papillomavirus vaccine uptake: A randomized controlled trial. Vaccine. 2018 Apr 25;36(18):2494-2500. doi: 10.1016/j.vaccine.2018.01.040. Epub 2018 Mar 26.
Other Identifiers
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IRB00087211a
Identifier Type: -
Identifier Source: org_study_id
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