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Completed

NCT Number: NCT00783185

Dual Diagnosis (Psychosis and Cannabismisuse): Comparison of Specialized Treatment Versus Unspecified Treatment

Intention of the study is to examine, if the symptomatology of dual diagnosis patients is less severe after a special indication training for reduction of cannabis consumption in comparison to unspecified trainings.

Point of interest is psychopathology and consumerism.

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Key information

Conditions

Psychotic Disorders Chemically-Induced Disorders Intervention Marijuana Abuse Mental Disorders Schizophrenia Spectrum and Other Psychotic Disorders Substance-Related Disorders

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

University of Konstanz

Konstanz, Baden-Wurttemberg, 78462, Germany

About this study

Dual diagnosis patients (psychosis and cannabis abuse) account for more clinical admissions than single diagnosis patients.

Cannabis misuse is a known risk factor for recurrence of psychosis.

A specified intervention on the basis of a manual for schizophrenic substance abusers is administered to inpatients in a specialized unit for young schizophrenic patients in a psychiatric hospital.

The control group, same indication (psychotic disorder and cannabis misuse) receives social competence training (specified for schizophrenic patients as well).

Admission to groups is randomly.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Clinical diagnosis of schizophrenia and disorders with psychotic features
  • Misuse of cannabis during 12 months preceding admission to hospital

Exclusion criteria

  • Not able to attend training twice a week for 45 minutes (concentration, attention, psychotic symptoms, agitation)
  • Discharge from hospital before completion of training

Treatment and study plan

Cannabis-Consumption-Reduction-Training

Behavioral

8 sessions within 4 weeks (twice a week, 45 minutes each) Cognitive behavioral therapy with focus on cannabis abuse

Social competence Training

Behavioral

8 sessions within 4 weeks (twice a week, 45 minutes) training to develop and ameliorate social competences

Primary outcomes

  1. PANSS Positive and Negative Symptom Scale

    Time frame: post intervention, six months follow-up

Secondary outcomes

  1. Urinstatus for cannabinoids

    Time frame: weekly during and post intervention, follow-up

Sponsors and collaborators

Lead sponsor

University of Konstanz

Other

Registry information

Official study title

Dual Diagnosis Psychosis and Substance Abuse: Short- and Middle-term Changes in Symptomatology After Visiting a Group Education Programme to Reduce Consumption of Cannabis

Important dates

Study start
2006
Primary completion
2009
Study completion
2010
First posted
Oct 31, 2008
Registry last updated
Jan 12, 2010

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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