GamblingGAMMANCT02841566
Comparative Study of the Link Between the Practice of Gambling and Money and Materialism Among Problem Gamblers and Non-problem Gamblers
An observational study of Gambling, run by Nantes University Hospital at 1 site in France.
Trial summary
The purpose of this study is to to explore the link between materialism and addiction to gambling and money Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Gambling
- What is being tested?
- questionnaire
- How many people
- 144 participants
- Where
- 1 siteFrance
- Study dates
- Oct 2015to Apr 2016
- How long will I take part?
- 1 Day
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: All new patients be seen by a doctor for a behavioral addiction in the addictology and psychiatric department
Who may be able to join
- subject having at least four diagnostic criteria in "Trouble linked to gambling and money" DSM-5 (APA 2013)
- subject who had written consent for participation in the EVALADD cohort
- Subject who has started treatment for a problem with the practice of gambling and money in the addictology and psychiatric department
- ( specific to non-problem gamblers)
- Subject playing games of chance and money at least once a year
- Subject playing games of chance and money less than once per week OR less than € 500 per year
- Subject having a score of 0-2 at ICJE questionnaire
Who cannot join
- Subject having difficulty reading or writing of the French language
- Subject having Parkinson's Disease
- Subject under guardianship
Trial locations and contacts
1 site in 1 country.
About this study
Official title: GAMbling and MAterialism
The purpose of this study is to to explore the link between materialism and addiction to gambling and money
- Conditions
- Gambling
- Being tested
- questionnaire
- Medical subject headings
- Gambling
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
questionnaireOther
| Study group | Role | What they receive |
|---|---|---|
| Problem glambers | The group of problem gamblers will consist of patients already included in the cohort EVALADD [favorable opinion of GNEDS 06/09/2012; CNIL authorization No. 912631 of 10.09.2013], and the data will be extracted directly from the database EVALADD Receives: Other: questionnaire | |
| Non-problem gamblers | The subjects of this group will be matched on sex, age and education level with the group problem gamblers. They will be recruited over the Internet and using the volunteer base [normal declaration with the CNIL: No. 1761543 of 21/05/2014]. Receives: Other: questionnaire |
What is being measured
The primary outcome is the main question the study is designed to answer.
Materialism level among problem gamblers compared to non-problem gamblers
To assess the total score of materialism by the Material Value Scale in 15 items (MVS-15), among a group of non-problem gamblers and a group of problem gamblers.
Measured: 1 year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Jul 2016 (estimated)
- Study startOct 2015
- Primary completionApr 2016
- Study completionApr 2016
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for GamblingStudies of the same condition, open and under way.
- More trials run by Nantes University HospitalThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 144 participants (actual)
- Target duration
- 1 Day
Sponsor and investigators
- Lead sponsor
- Nantes University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02841566
- Sponsor's protocol ID
- RC15_0372
- Acronym
- GAMMA
- Status last verified
- Jul 2016
- First submitted
- 19 Jul 2016
- Last updated
- 24 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 24 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- GAMbling and MAterialism
- ClinicalTrials.gov ID
- NCT02841566
- Acronym / sponsor ID
- GAMMA / RC15_0372
- Conditions
- Gambling
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 144 participants (actual)
- Lead sponsor
- Nantes University HospitalUniversity, hospital or other
- Study start
- Oct 2015
- Primary completion
- Apr 2016 (actual)
- Study completion
- Apr 2016 (actual)
- First posted
- 22 Jul 2016 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to to explore the link between materialism and addiction to gambling and money
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Target follow-up
- 1 Day
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Problem glambers | – | Other: questionnaireThe group of problem gamblers will consist of patients already included in the cohort EVALADD [favorable opinion of GNEDS 06/09/2012; CNIL authorization No. 912631 of 10.09.2013], and the data will be extracted directly from the database EVALADD |
| Non-problem gamblers | – | Other: questionnaireThe subjects of this group will be matched on sex, age and education level with the group problem gamblers. They will be recruited over the Internet and using the volunteer base [normal declaration with the CNIL: No. 1761543 of 21/05/2014]. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- All new patients be seen by a doctor for a behavioral addiction in the addictology and psychiatric department
Key inclusion criteria (7 listed)
- subject having at least four diagnostic criteria in "Trouble linked to gambling and money" DSM-5 (APA 2013)
- subject who had written consent for participation in the EVALADD cohort
- Subject who has started treatment for a problem with the practice of gambling and money in the addictology and psychiatric department
- ( specific to non-problem gamblers)
- Subject playing games of chance and money at least once a year
Key exclusion criteria (3 listed)
- Subject having difficulty reading or writing of the French language
- Subject having Parkinson's Disease
- Subject under guardianship
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| questionnaire | Other | Non-problem gamblers, Problem glambers |
Primary outcome
Materialism level among problem gamblers compared to non-problem gamblers
Time frame: 1 year
To assess the total score of materialism by the Material Value Scale in 15 items (MVS-15), among a group of non-problem gamblers and a group of problem gamblers.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Jun 2026.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Gambling, run by Nantes University Hospital at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 7 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 24 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Materialism level among problem gamblers compared to non-problem gamblers (time frame: 1 year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Jun 2026.