Comparing the Spanish Version of CANreduce With or Without Psychological Support and Treatment as Usual, Reducing Cannabis Use. (CANREDUCE)

Parc de Salut Mar

Status: Unknown

Conditions: Cannabis Use Disorder

Treatments: Behavioral: psychological support; Behavioral: CANreduce

Study type: Interventional

Funder types: Other

Identifiers

NCT04517474

2019/8901/I

Details and patient eligibility

About

Cannabis is the most widely used psychoactive substance around the world after alcohol and tobacco. Although approximately one in ten users develop serious problems of dependency, only a small number attend outpatient addiction counseling centers. CANreduce is an adherence-focused guidance enhanced web-based self-help program with promising results in German and other languages. It also reaches those users who hesitate to approach such treatment centers and help them to reduce their cannabis use.

This study will test the effectiveness of the Spanish version of the enhanced web-based self-help intervention with psychological support, an enhanced web-based self-help intervention (without psychological support) and a waiting list control in reducing cannabis use in problematic users.

Enrollment: 300 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Cannabis use of at least once a week 30 days prior to study entry
• At least 18 years old
• At least weekly internet access and a valid email address

Exclusion criteria

• Participant reports current pharmacological psychiatric disease or history of psychosis, schizophrenia, bipolar type I disorder or significant current suicidal or homicidal thoughts
• Use of other pharmacological and psychosocial treatments for cannabis use disorders
• Inability to read or write in Spanish

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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300 participants in 3 patient groups

CANreduce with psychological support

Experimental group

Description:

Adherence-focused guidance enhanced web-based self-help for the reduction of cannabis use with psychological support

Treatment:

Behavioral: psychological support

Behavioral: CANreduce

CANreduce without psychological support

Experimental group

Description:

Adherence-focused guidance enhanced web-based self-help for the reduction of cannabis use without psychological support

Treatment:

Behavioral: CANreduce

Treatment as usual

No Intervention group

Description:

Users will be prompt to a web with a list of the treatment centers nearby their postal code