Simple link change boosts vaccine email trust, study finds
NCT ID NCT07516600
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested whether the design of weblinks in digital vaccination invitations affects trust and willingness to book an appointment. Over 1,200 adults from the UK and US viewed either a standard or a clearer, more transparent weblink. The goal was to see if a better link makes people more likely to trust the message and schedule a vaccine.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
-
Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
-
1,226 people
The number who actually took part.
- Started
-
Jan 2022
- Finished
-
Jan 2022
- Lead sponsor
-
Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
-
18 years and older
- Sex
-
Anyone
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Residency: Must be a resident of either the United Kingdom or the United States Exclusion Criteria: * Attention Failure: Participants who failed the designated attention check included within the survey will be excluded from the analysis * Speeding: Participants who completed the study "too fast"-indicating a lack of meaningful engagement with the experimental stimuli-were filtered out
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Vaccination are added.
Genom att skicka in godkänner du våra Användarvillkor
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
University of Essex
Colchester, Essex, CO4 3SQ, United Kingdom
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Cold and vibration may replace numbing cream for Kids' shots
- A nudge in the mailbox: could a letter boost flu shots for millions at risk?
- Seeing germs up close: a microscope workshop aims to boost vaccination and hygiene
- Hospital push could shield seniors from preventable diseases
- Meningitis b vaccine shows promise in children
- Teens' sleep habits may boost vaccine power