Do emails and texts get people to join gut health research?
NCT ID NCT07473466
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tested whether sending emails or text messages (SMS) reminders encourages inactive volunteers to complete questionnaires in the Le French Gut e-cohort. Over 20,000 participants were randomly assigned to receive different types of reminders. The goal was to find the best way to keep people engaged in online health research.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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20,487 people
The number who actually took part.
- Started
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Nov 2024
- Finished
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Nov 2024
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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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: * Being registered on the "Le French Gut" platform but not active participant (e.i. eligibility questionnaire not completed, "Le French Gut" consent not validated, "A propos de vous" questionnaire not completed) * Having provided a valid email address and/or mobile-phone number Exclusion Criteria: * Completed "A propos de vous" questionnaire before the first reminder * Being non eligible to the "Le French Gut" cohort (eligibility to "Le Fench Gut" cohort: being over 18 years-old and living in France)
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Genom att skicka in godkänner du våra Användarvillkor
Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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SKEZI
Paris, France
More trials for these conditions
Other studies related to the condition(s) this trial covers.