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PW01-194 - Cannabis Use And Non-Clinical Dimensions Of Psychosis In University Students Presenting To Primary Care

R. Skinner, L. Conlon, D. Gibbons, C. MacDonald

European Psychiatry 2010 DOI: 10.1016/s0924-9338(10)71601-1 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Cross-sectional survey Peer reviewed
Sample size 1,049
Population University students attending a student health unit
Measures Community Assessment of Psychic Experiences, Hospital Anxiety and Depression Scale
Topics Cannabis
Key findings More frequent cannabis use was independently associated with greater intensity of positive, negative, and depressive psychotic symptoms; earlier onset of cannabis use was linked to more positive symptoms. The authors propose that cannabis use increases the risk of psychotic symptoms, with heavier and earlier use further elevating risk.

Abstract

ObjectiveTo explore the relationship between cannabis use and self-report dimensions of psychosis in a population of university students presenting for any reason to primary care.MethodOne thousand and forty-nine students attending the Student Health Unit, National University of Ireland, Galway, completed self-report questionnaires on alcohol and substance misuse, non-clinical dimensions of psychosis (Community Assessmemnt of Psychic Experiences), anxiety and depression (Hospital Anxiety and Depression Scale). Association of cannabis use with psychiatric symptoms was explored whilst controlling for confounds.ResultsMore frequent cannabis use was independently associated with greater intensity of positive, negative and depressive psychotic symptoms. The earlier the age of onset of cannabis use, the more positive psychotic symptoms were reported.ConclusionThese findings support the hypothesis that cannabis use increases the risk of developing psychotic symptoms and that this risk is further increased in those individuals who use cannabis more heavily and commence it at a younger age.

Comparable studies

Other cross-sectional and survey studies on cannabis, most cited first.

Study Year Design Participants
Cannabis use before age 15 and subsequent executive functioning 104 chronic cannabis users (49 early-onset before age 15, 55 late-onset after age 15)... 2011 Observational cross-sectional study n = 148
Patterns of simultaneous polysubstance use in drug using university students Drug-using university students 2006 Cross-sectional survey n = 149
Persisting Reductions in Cannabis, Opioid, and Stimulant Misuse After Naturalistic Psychedelic Use: An Online Survey Online survey respondents 2020 Cross-sectional survey
User perceptions of the benefits and harms of hallucinogenic drug use: A web-based questionnaire study Users of hallucinogenic drugs who completed a web-based questionnaire 2010 Cross-sectional survey n = 600
Illicit Use of LSD or Psilocybin, but not MDMA or Nonpsychedelic Drugs, is Associated with Mystical Experiences in a Dose-Dependent Manner Adults recruited from the MAPS website and newsletter, most reporting use of various... 2012 Cross-sectional survey n = 337

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