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Massive french study tests app to curb suicide rates

NCT ID NCT03565562

Prevention Sponsor: Institut National de la Santé Et de la Recherche Médicale, France Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether promoting a free web and mobile tool called StopBlues could reduce suicides and suicide attempts in the general population. Over 100,000 adults in 42 French communities took part, with some communities actively promoting the tool and others not. The goal was to see if easy access to mental health resources and support could make a real difference at a population level.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
StopBlues e-health tool (website and app)
What this could lead to
If it works, this could provide a scalable, low-cost way to prevent suicide and psychological distress in communities.
What could go wrong
This is a large but early-stage trial; results depend on how well local authorities promote the tool, and the effect may be small or hard to measure.

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

100,000 people

The number who actually took part.

Started

Apr 2018

Finished

Mar 2020

Lead sponsor

A government agency

The lead sponsor is a government body.

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * \>18 years * living in one of the 42 french local authority participating to the trial * volunteer * access to internet (smartphone/tablet/computer) Exclusion Criteria: * \<18 years

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Conditions

The condition(s) this trial relates to.

anxiety disorder Depression Suicide Suicide, Attempted

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Anxiety disorders Local authorities promotion Psychological distress Suicide and depression

Contacts and locations

Locations

  • Faculté de Médecine Paris Diderot Paris 7

    Paris, 75010, France

More trials for these conditions

Other studies related to the condition(s) this trial covers.