Factors Associated with Psychosis in 2098 Methamphetamine Users Admitted to 104 Outpatient Counseling Centers in 80...

Evidence suggests that individuals who use methamphetamine are at a significantly higher risk of developing psychosis compared to non-users. This study aims to examine the rate of psychosis among methamphetamine users and to investigate factors related to methamphetamine-associated psychosis (MAP). Two thousand ninety-eight (2,098) individuals with methamphetamine use were admitted to outpatient care. Available admissions data included clinical interviews, the Addiction Profile Index (API), and API-clinical forms. MAP was identified in 267 (12.7%) participants. Our data analysis found significant sociodemographic, clinical, and personality differences between MAP and non-MAP cohorts on admission. Multivariate regression analysis revealed that older age (OR = 1.049), younger age of substance use onset (OR = 0.960), more frequent MA use (OR = 1.622), being single (OR = 1.974), lower education (OR = 0.46), increased number of withdrawal symptoms (OR = 1.100), higher lack of anger control scores (OR = 1.422), higher lack of assertiveness scores (OR = 1.396), and higher anxiety scores (OR = 1.715) were significantly associated with MAP. Although factors identified in this study represent state (on admission) rather than stable characterological traits, these results may nonetheless help us better characterize contextual factors associated with MAP in an outpatient population.