Please select the eligibility criteria that correspond to the clinical trial below.
Title: Does a BI Conducted by General Practitioners Reduce Consumption of Canabis in 15 to 25 Years Old ?
Brief Summary: Background: Cannabis is the most prevalent illegal drug used in France, and consequences arising from the step of 'casual consumers'(1-10 joints/month). Side effects of cannabis are now well documented: Trauma (driving after consuming cannabis), respiratory, cardiovascular diseases and psychiatric and social problems. The general practitioner (GP) is the health professional most viewed by adolescents. Brief interventions (BI) for adult alcohol use have been shown to be efﬁcient. Some BI have been designed to inspect adolescents and consumption of cannabis have been piloted, showing their feasibility, but no test has validated them.

Aim : Does a BI conducted by general practitioners reduce consumption of canabis in 15 to 19 years old ?

Method:

Two preliminary qualitative studies (with adolescents and GP), were used to analyze the difficulties of communication around cannabis use. The Scientific Committee has analyzed the results and developed a workshop around BI, adapted to adolescents cannabis users.

CANABIC is a quantitative study to validate use of BI with cannabis users: a randomized controlled trial, clustered study, comparing an intervention group (IG) and a control group (CG). The intervention is the achievement of the IB during a specific consultation. The outcome is the consumption of cannabic (Number of joints / month).

The study will be carried out in 3 french regions : Auvergne, Rhône-Alpes and Languedoc-Roussillon. 150 GPs wil be recruited and randomized in intervention group or control group (ratio 1 :1).

Each GP will inlcude 5 adolescents (i.e. a total of 750 adolescents) - . The number of adolescents needed has been calculate with hypothesis of a significant difference of 30% in consumption of cannabis between adolescents who beneficied of BI (IG) and those who do not experienced BI ( CG) A pilot study has been conducted. Cannabis use by adolescents has decreased. Their perception of cannabis has changed: they are aware of the harmful effects of their consumption. This pilot study has improve many points of the protocol.

Results:

A decrease of 30% of consumption is expected (joints per month). Perception of cannabis by adolescents will be reviewed.

Conclusions:

To validate an IB adaptated to consultation with adolscents cannabis consumer in order to provide a tool for GP in their daily practice.


Options:
A: Inclusion Criteria:

* at least 18 years old
* receive medical care at one of the participating primary care clinics at Harborview Medical Center/University of Washington Medical Center
* will maintain care at the clinic for one year
* have a phone or easy access to phone, voicemail, or email
* used recreational drugs in the last 3 months
* used prescription medications not as prescribed in the last 3 months

Exclusion Criteria:

* participation in any formal substance abuse treatment programs in the last 30 days (excluding 12-step or self-help groups)
* terminal illness
B: Inclusion Criteria:

* age 16 or older
* lifetime diagnosis of cannabis abuse or cannabis dependence (according to the DSM-IV criteria
* current (4 wks) regular cannabis use (at least 2 days a week)
* persistent history of regular cannabis use of at least 3 years
* informed consent to the study procedures and assessments

Exclusion Criteria:

* current alcohol or any illicit drug dependence syndrome according to DSM-IV other than due to cannabis
* lifetime history of any psychotic disorder
* current severe episode of Major depression
* current panic-agoraphobic disorder (severe)
* severe learning disability, brain damage or pervasive developmental disorder
* currently acute suicidality
* not fluent in german language
* acute signs of intoxication at screening or baseline assessment due to opiates or any type of stimulants, causing cognitive impairments
* currently in treatment for cannabis-related disorders in other services
* current psychotropic medications with sedatives and antipsychotics
C: Inclusion Criteria:

current marijuana use; currently sexually active; able to complete the study procedures in English

Exclusion Criteria:

pregnant; alcohol dependence; drug dependence
D: Inclusion Criteria:

* Adolescents 15 to 25 years Repetead users : 1 to 10 per month; regular users : 11 to 29 per month; daily users : 1 and more per day.

The patient must have given his informed consent and signed the form of no objection

Exclusion Criteria:

* Adolescents with psychiatric illness considered by the attending physician in acute decompensated
* Intellectual Disability
* Hard of hearing
* No French language skills
* Patient already under treatment for the withdrawal of an addicition to cannabis or other substance
* Adolescents who participated in the preliminary qualitative study

Answer: D