Actively Recruiting
Can Stories Encourage the Elderly to Vaccinate? Combining Viewer-tailored Personal Narrative Videos With Informational Videos to Improve Vaccine Uptake Among Older Adults
Led by Johns Hopkins Bloomberg School of Public Health · Updated on 2026-02-13
6000
Participants Needed
1
Research Sites
14 weeks
Total Duration
On this page
Sponsors
J
Johns Hopkins Bloomberg School of Public Health
Lead Sponsor
M
Merck Sharp & Dohme LLC
Collaborating Sponsor
AI-Summary
What this Trial Is About
Researchers are evaluating the impact of different types of videos on increasing vaccination rates among older adults. This study compares the effectiveness of informational animation videos, personal narrative videos, and combinations of both in encouraging vaccination. The focus is on U.S. adults aged 50 and older, aiming to understand which video approach better motivates vaccine uptake. Participants are randomly assigned to one of five groups: no videos, informational animation video only, personal narrative video only, personal narrative video followed immediately by the informational animation video, or informational animation video followed immediately by the personal narrative video. The informational animation covers human papillomavirus (HPV) disease, addresses specific concerns, and explains the safety and importance of HPV vaccines. Personal narrative videos share individual experiences with HPV and are tailored to match each participant's race/ethnicity and gender as closely as possible. During the study, participants will be followed for 9 months to track how many receive the vaccine after viewing the assigned videos or no videos. Researchers will measure vaccine uptake as the primary outcome. Participants need to complete surveys and be able to watch and listen to videos on their devices. The study is sponsored by Johns Hopkins Bloomberg School of Public Health and includes healthy volunteers aged 50 and older.
CONDITIONS
Brief Title
Can Stories Encourage the Elderly to Vaccinate? Combining Viewer-tailored Personal Narrative Videos With Informational Videos to Improve Vaccine Uptake Among Older Adults
Who Can Participate
Eligibility Criteria
You may qualify if you...
- U.S. adults aged 50 and older
You will not qualify if you...
- Participants who do not complete the survey
- Participants who are unable or refuse to view and listen to videos on the participant's device
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person or remote)
Duration - Single session
Participants view behavioral intervention videos tailored to their group assignment to encourage vaccination.
1 visit to view assigned video(s)
Duration - 9 months
Participants are followed for vaccine uptake over a 9-month period after the intervention.
Periodic follow-up contacts to assess vaccine status
Trial Site Locations
Total: 1 location
1
Ipsos
New York, New York, United States, 10016
Actively Recruiting
Research Team
M
Michelle Goryn
How is the study designed?
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
PREVENTION
Number of Arms
5
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