Contingency intervention for reduction of cannabis in early psychosis

Not Applicable

Completed

• Conditions: Psychotic illnesses including schizophrenia, schizo-affective disorder and bipolar disorder with psychotic symptoms; Mental and Behavioural Disorders; Mental and behavioural disorders due to use of cannabinoids

• Registration Number: ISRCTN33576045
• Lead Sponsor: niversity College London (UK)

Brief Summary

2016 protocol in: https://www.ncbi.nlm.nih.gov/pubmed/27770820 2019 results in: https://www.ncbi.nlm.nih.gov/pubmed/31412884 (added 16/08/2019) 2019 report in: https://www.ncbi.nlm.nih.gov/pubmed/31460865 (added 29/08/2019)

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2011-11-28
• Study Completion: 2017-10-31
• Last Update Posted: 16 September 2019

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 551

Inclusion Criteria

1. Under the care of an early intervention service for psychosis
2. Diagnostic criteria for EIS entry require a first psychotic episode significantly impairing functioning and lasting more than a week
3. Problematic cannabis use is operationalised as having used cannabis at least once in at least 12 of the previous 24 weeks
4. Aged 18-39, male and female participants

Exclusion Criteria

Insufficient English to complete the study assessments

Study & Design

• Study Type: Interventional
• Study Design: Not specified