Abstract:
INTRODUCTION AND AIMS:To determine whether recreational methamphetamine use is associated with an increased risk of psychotic symptoms. DESIGN AND METHOD:A cross-sectional survey of 157 people attending dance events in Sydney, Australia. Participants were assessed for psychotic symptoms in the past year using items from the Psychosis Screen. Participants with and without psychotic symptoms were compared on methamphetamine use, polydrug use and other demographic factors. An ordinal logistic regression was used to determine the probability of psychotic symptoms by methamphetamine use and level of polydrug use. RESULTS:Psychotic symptoms in the past year were predicted by methamphetamine use and heavier polydrug use in the past year, and a history of a psychotic disorder (schizophrenia, schizoaffective or bipolar affective disorder). After removing participants with a history of a psychotic disorder (n = 16) and adjusting for polydrug use, methamphetamine use increased the probability of two or more psychotic symptoms (indicative of psychosis risk) from 9% to 21%. There was a non-significant increase in the risk of psychotic symptoms with higher levels of polydrug use. Methamphetamine use was typically monthly or less often (83%), and most users described their use as recreational (85%). DISCUSSION AND CONCLUSIONS:Within the context of polydrug use, recreational methamphetamine use is associated with a twofold to threefold increase in the probability of psychotic symptoms.
journal_name
Drug Alcohol Revjournal_title
Drug and alcohol reviewauthors
McKetin R,Hickey K,Devlin K,Lawrence Kdoi
10.1111/j.1465-3362.2009.00160.xsubject
Has Abstractpub_date
2010-07-01 00:00:00pages
358-63issue
4eissn
0959-5236issn
1465-3362pii
DAR160journal_volume
29pub_type
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