American Journal of Psychiatry · 2002 · 281 citations · 17 references
Major depressive episodes with psychotic features are relatively frequent in the general population, affecting four of 1,000 individuals. Feelings of worthlessness or guilt can be a good indicator of the presence of psychotic features.
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Cross-National Epidemiology of Major Depression and Bipolar Disorder
Myrna M. Weissman · JAMA · 1996 · 2.2K citations
One-Month Prevalence of Mental Disorders in the United States
Darrel A. Regier · Archives of General Psychiatry · 1988 · 1.8K citations