Cannabis consumption as a prognostic factor in schizophrenia.
M J Martinez-Arevalo, A Calcedo-Ordoñez, J R Varo-Prieto
The British Journal of Psychiatry May 1994 DOI: 10.1192/bjp.164.5.679 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational follow-up study Peer reviewed |
|---|---|
| Sample size | 62 |
| Population | Schizophrenic patients aged 18 to 30 treated at community mental health centres in Navarra who had relapsed |
| Duration | One-year follow-up |
| Topics | Cannabis |
| Key findings | Among 62 young schizophrenia patients in Navarra who relapsed and were followed for one year, the course of illness was influenced by continued cannabis consumption, previous cannabis intake, non-compliance with treatment, and stress. |
Abstract
Data were analysed from 62 schizophrenic patients between 18 and 30 years of age, treated at the community mental health centres in Navarra, who had relapsed and then completed a one-year follow-up study. Factors influencing the course of illness during follow-up were: continuing cannabis consumption; previous cannabis intake; non-compliance with treatment; and stress.
Comparable studies
Other observational and cohort studies on cannabis, most cited first.
| Study | Year | Design | Participants |
|---|---|---|---|
| High-potency cannabis and the risk of psychosis People with first episode of psychosis and healthy controls from the local population | 2009 | Case-control study | n = 454 |
| Ayahuasca-Assisted Therapy for Addiction: Results from a Preliminary Observational Study in Canada Rural aboriginal population | 2013 | Observational study | |
| Impaired cognitive performance in drug free users of recreational ecstasy (MDMA) Otherwise healthy young people | 2000 | Observational | |
| Continued cannabis use and risk of incidence and persistence of psychotic symptoms: 10 year follow-up cohort study Individuals from the general population in Germany aged 14-24 at baseline | 2011 | Observational cohort | n = 1,923 |
| Cannabis-induced psychosis and subsequent schizophrenia-spectrum disorders: follow-up study of 535 incident cases Patients treated for cannabis-induced psychotic symptoms in Denmark between 1994 and... | 2005 | Observational cohort | n = 535 |
Citations in the library
Cited by 21
- Effects of cannabis use on outcomes of psychotic disorders: systematic review The British Journal of Psychiatry October 31, 2008
- Cannabis use and psychotic disorders: an update Drug and Alcohol Review November 30, 2004
- New Perspectives in the Studies on Endocannabinoid and Cannabis: Cannabinoid Receptors and Schizophrenia Journal of Pharmacological Sciences 2004
- Pathways from Cannabis to Psychosis: A Review of the Evidence Frontiers in Psychiatry 2013
- Potential antipsychotic properties of central cannabinoid (CB1) receptor antagonists The World Journal of Biological Psychiatry March 1, 2010
and 16 more in the library