Can a 9-Month ad blackout help problem gamblers stay away?
NCT ID NCT05413564
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether extending the time gambling websites stop sending ads after a person voluntarily bans themselves helps them gamble less. Over 2,500 adults who self-excluded from online sports betting, poker, or horse racing were randomly assigned to either the standard procedure or one where ads were paused for 9 months. The goal was to see if the longer ad break reduced the amount of money lost to gambling.
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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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2,554 people
The number who actually took part.
- Started
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May 2022
- Finished
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May 2024
- Lead sponsor
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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
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18 to 99 years
- 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: * 18 years or older * self-excluder during the recruitment period * Online sports betting * poker and horse racing player * account opened for at least 4 weeks * self-exclusion for 3 months or less (minimum 3 days). Exclusion Criteria: * Player who has objected to the use of his collected data when opening his account. * It's not the first self-exclusion of the inclusion period.
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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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Amandine LUQUIENS
Nîmes, Nîmes, 30029, France
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Other studies related to the condition(s) this trial covers.
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