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The impact of substance use disorders on clinical outcome in 643 patients with first‐episode psychosis

Objective:  Studies investigating the impact of comorbid substance use disorders (SUD) in psychosis have tended to focus on cross‐sectional data, with few studies examining the effects of substance use course on clinical outcome. The main aim of the present study was to assess the impact of baseline SUD and course of SUD on remission of positive symptoms.