Early onset of cannabis use and violent behavior in psychosis
AbstractBackground:Although evidence from psychosis patients demonstrates the adverse effects of cannabis use (CU) at a young age and that the rate of CU is high in subgroups of young violent patients with psychotic disorders, little is known about the possible effect of the age of onset of CU on la...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2020-01-01
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| Series: | European Psychiatry |
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| Online Access: | https://www.cambridge.org/core/product/identifier/S0924933820000711/type/journal_article |
| _version_ | 1811156285763092480 |
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| author | Valerie Moulin Luis Alameda David Framorando Philipp-S Baumann Mehdi Gholam Jacques Gasser Kim-Q Do Cuenod Philippe Conus |
| author_facet | Valerie Moulin Luis Alameda David Framorando Philipp-S Baumann Mehdi Gholam Jacques Gasser Kim-Q Do Cuenod Philippe Conus |
| author_sort | Valerie Moulin |
| collection | DOAJ |
| description | AbstractBackground:Although evidence from psychosis patients demonstrates the adverse effects of cannabis use (CU) at a young age and that the rate of CU is high in subgroups of young violent patients with psychotic disorders, little is known about the possible effect of the age of onset of CU on later violent behaviors (VB). So, we aimed to explore the impact of age at onset of CU on the risk of displaying VB in a cohort of early psychosis patients.Method:Data were collected prospectively over a 36-month period in the context of an early psychosis cohort study. A total of 265 patients, aged 18–35 years, were included in the study. Logistic regression was performed to assess the link between age of onset of substance use and VB.Results:Among the 265 patients, 72 had displayed VB and 193 had not. While violent patients began using cannabis on average at age 15.29 (0.45), nonviolent patients had started on average at age 16.97 (0.35) (p = 0.004). Early-onset CU (up to age 15) was a risk factor for VB (odds ratio = 4.47, confidence interval [CI]: 1.13–20.06) when the model was adjusted for age group, other types of substance use, being a user or a nonuser and various violence risk factors and covariates. History of violence and early CU (until 15) were the two main risk factors for VB.Conclusions:Our results suggest that early-onset CU may play a role in the emergence of VB in early psychosis. |
| first_indexed | 2024-04-10T04:49:02Z |
| format | Article |
| id | doaj.art-1dea4fd49d8246d19acd3ace4bf86da2 |
| institution | Directory Open Access Journal |
| issn | 0924-9338 1778-3585 |
| language | English |
| last_indexed | 2024-04-10T04:49:02Z |
| publishDate | 2020-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | European Psychiatry |
| spelling | doaj.art-1dea4fd49d8246d19acd3ace4bf86da22023-03-09T12:33:57ZengCambridge University PressEuropean Psychiatry0924-93381778-35852020-01-016310.1192/j.eurpsy.2020.71Early onset of cannabis use and violent behavior in psychosisValerie Moulin0https://orcid.org/0000-0003-3849-8943Luis Alameda1David Framorando2Philipp-S Baumann3Mehdi Gholam4Jacques Gasser5Kim-Q Do Cuenod6https://orcid.org/0000-0003-1968-1646Philippe Conus7Department of Psychiatry, Unit for Research in Legal Psychiatry and Psychology, Institute of Forensic Psychiatry, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandDepartment of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, London, UK Department of Psychiatry, Unit for Research in Schizophrenia, Center for Psychiatric Neuroscience, Lausanne University Hospital (CHUV), Lausanne, Switzerland Department of Psychiatry, Hospital Universitario Virgen del Rocío, Universidad de Sevilla, Sevilla, Spain Instituto de Investigacion Sanitaria de Sevilla, IBiS, Sevilla, SpainDepartment of Psychiatry, Unit for Research in Legal Psychiatry and Psychology, Institute of Forensic Psychiatry, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandDepartment of Psychiatry, Service of General Psychiatry, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandDepartment of Psychiatry, Center for Psychiatric Epidemiology and Psychopathology, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandDepartment of Psychiatry, Unit for Research in Legal Psychiatry and Psychology, Institute of Forensic Psychiatry, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandDepartment of Psychiatry, Unit for Research in Schizophrenia, Center for Psychiatric Neuroscience, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandDepartment of Psychiatry, Service of General Psychiatry, Lausanne University Hospital (CHUV), Lausanne, SwitzerlandAbstractBackground:Although evidence from psychosis patients demonstrates the adverse effects of cannabis use (CU) at a young age and that the rate of CU is high in subgroups of young violent patients with psychotic disorders, little is known about the possible effect of the age of onset of CU on later violent behaviors (VB). So, we aimed to explore the impact of age at onset of CU on the risk of displaying VB in a cohort of early psychosis patients.Method:Data were collected prospectively over a 36-month period in the context of an early psychosis cohort study. A total of 265 patients, aged 18–35 years, were included in the study. Logistic regression was performed to assess the link between age of onset of substance use and VB.Results:Among the 265 patients, 72 had displayed VB and 193 had not. While violent patients began using cannabis on average at age 15.29 (0.45), nonviolent patients had started on average at age 16.97 (0.35) (p = 0.004). Early-onset CU (up to age 15) was a risk factor for VB (odds ratio = 4.47, confidence interval [CI]: 1.13–20.06) when the model was adjusted for age group, other types of substance use, being a user or a nonuser and various violence risk factors and covariates. History of violence and early CU (until 15) were the two main risk factors for VB.Conclusions:Our results suggest that early-onset CU may play a role in the emergence of VB in early psychosis.https://www.cambridge.org/core/product/identifier/S0924933820000711/type/journal_articleCannabis usepsychosisschizophreniaviolent behavior |
| spellingShingle | Valerie Moulin Luis Alameda David Framorando Philipp-S Baumann Mehdi Gholam Jacques Gasser Kim-Q Do Cuenod Philippe Conus Early onset of cannabis use and violent behavior in psychosis European Psychiatry Cannabis use psychosis schizophrenia violent behavior |
| title | Early onset of cannabis use and violent behavior in psychosis |
| title_full | Early onset of cannabis use and violent behavior in psychosis |
| title_fullStr | Early onset of cannabis use and violent behavior in psychosis |
| title_full_unstemmed | Early onset of cannabis use and violent behavior in psychosis |
| title_short | Early onset of cannabis use and violent behavior in psychosis |
| title_sort | early onset of cannabis use and violent behavior in psychosis |
| topic | Cannabis use psychosis schizophrenia violent behavior |
| url | https://www.cambridge.org/core/product/identifier/S0924933820000711/type/journal_article |
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