Dubertret 2010.

Trial name or title	Effect of motivational therapy on schizophrenia with cannabis misuse.
Methods	RCT.
Participants	Schizophrenia or schizo‐affective disorder according to DSM‐IV criteria.
Interventions	MI vs usual care.
Outcomes	Cannabis consumption evaluated by the Time‐Line Follow Back at 6 months inclusion, 3 month, 6 month, 12 month.
Starting date	November 2008.
Contact information	Caroline Dubertret (caroline.dubertret@lmr.aphp.fr) Assistance Publique ‐ Hopitaux de Paris. Telephone: +33 (0) 14760 6413
Notes