Journal
INTERNATIONAL JOURNAL OF METHODS IN PSYCHIATRIC RESEARCH
Volume 21, Issue 4, Pages 286-300Publisher
WILEY-BLACKWELL
DOI: 10.1002/mpr.1362
Keywords
factor analysis; reliability; schizophrenia; craving; cannabis
Categories
Funding
- Geestkracht programme of the Dutch Health Research Council (ZON-MW) [10-000-1002]
- Amsterdam: Academic Psychiatric Centre of the Academic Medical Centre
- GGZ Ingeest
- Arkin
- Dijk en Duin
- Rivierduinen
- Erasmus Medical Centre
- GGZ Noord Holland Noord
- Maastricht: Maastricht University Medical Centre
- GGZ Eindhoven
- GGZ Midden-Brabant
- GGZ Oost-Brabant
- GGZ Noord-Midden Limburg
- Mondriaan Zorggroep
- Prins Clauscentrum Sittard
- RIAGG Roermond
- Universitair Centrum Sint-Jozef Kortenberg
- CAPRI University of Antwerp
- PC Ziekeren Sint-Truiden
- PZ Sancta Maria SintTruiden
- GGZOverpelt
- OPZ Rekem
- Groningen: University Medical Centre Groningen
- Lentis
- GGZ Friesland
- GGZ Drenthe
- Dimence
- Mediant
- GGZ De Grote Rivieren
- Parnassia psycho-medical centre (The Hague)
- Utrecht: University Medical Centre Utrecht
- Altrecht
- Symfora
- Meerkanten
- Riagg Amersfoort
- en Delta
Ask authors/readers for more resources
Cannabis use is more common in individuals with non-affective psychotic disorder and their siblings compared to healthy controls. As cannabis use is associated with a greater risk to develop psychotic disorder and an adverse outcome in those who already developed psychosis, it is important to know the role of craving in continued cannabis use and relapse in these vulnerable subjects. Therefore, we examined the validity of the Obsessive Compulsive Drug Use Scale for cannabis (OCDUS-CAN) in patients with non-affective psychotic disorder, their siblings, and healthy controls who all used cannabis in the past year. Simultaneous component analysis (SCA) was used to determine component weights that optimally explained the (co)variance of the OCDUS-CAN variables in these different populations simultaneously. A three-component SCA solution explained 74.2 % of the total variance, and consisted of well-interpretable subscales that could be best described as craving/urge, resistance, and impact. Reliability of the subscales was good. The three subscales significantly discriminated between frequent and infrequent cannabis users. Patients scored higher on the craving/urge and impact scale than siblings and controls, which could be related to primary and secondary symptoms of their disorder. The OCDUS-CAN is well suitable for people with or without vulnerability for psychotic disorder. Copyright (C) 2012 John Wiley & Sons, Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available