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Typologies of positive psychotic symptoms in methamphetamine dependence
Author(s) -
Bousman Chad A.,
McKetin Rebecca,
Burns Richard,
Woods Steven Paul,
Morgan Erin E.,
Atkinson J. Hampton,
Everall Ian P.,
Grant Igor
Publication year - 2015
Publication title -
the american journal on addictions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.997
H-Index - 76
eISSN - 1521-0391
pISSN - 1055-0496
DOI - 10.1111/ajad.12160
Subject(s) - schizophrenia (object oriented programming) , psychology , latent class model , psychiatry , methamphetamine , intervention (counseling) , psychosis , delusion , positive and negative syndrome scale , delusional disorder , clinical psychology , statistics , mathematics
Background and Objectives Understanding methamphetamine associated psychotic (MAP) symptom typologies could aid in identifying individuals at risk of progressing to schizophrenia and guide early intervention. Methods Latent class analysis (LCA) of psychotic symptoms collected from 40 ( n = 40) methamphetamine dependent individuals with a history of psychotic symptoms but no history of a primary psychotic disorder. Results Three typologies were identified. In one, persecutory delusions dominated (Type 1), in another persecutory delusions were accompanied by hallucinations (Type 2), and in the third a high frequency of all the assessed hallucinatory and delusional symptoms was observed (Type 3). Discussion and Conclusion MAP is a heterogeneous syndrome with positive symptom typologies. Scientific Significance This study represents the first attempt at identifying typologies of MAP and highlights the potential utility of LCA in future large‐scale studies. (Am J Addict 2015;24:94–97)