Risk of Psychosis in Recurrent Episodes of Psychotic and Nonpsychotic Major Depressive Disorder: A Systematic Review and Meta-Analysis
2018
Objective:The authors conducted a systematic review and meta-analysis to determine whether the risk of psychosis is higher in past or future episodes in patients with major depression with psychotic features than in patients with nonpsychotic depression.Method:PubMed, Embase, and PsycINFO were searched, and studies were selected that 1) identified patients with unipolar major depression, 2) made diagnoses of psychosis based on the presence of delusions or hallucinations, 3) characterized past or subsequent episodes as psychotic or nonpsychotic, and 4) were published in English. Two meta-analyses were then conducted using data from patients having index depressive episodes with or without psychosis at study entry to determine the risk of any prior or subsequent psychotic episode and the risk of psychosis in all episodes.Results:Twelve studies met the inclusion criteria, and altogether they included 546 psychotic and 1,583 nonpsychotic patients with unipolar depression. In seven of the studies, the risk rat...
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