MIDAS Project Publication Abstracts

Zimmerman, M., McDermut, Wilson, Mattia, J.I. The frequency of anxiety disorders in psychiatric outpatients with major depressive disorder. American Journal of Psychiatry, 2005, 157, 1337-1400.

Objective: The goal of the present study was to examine the frequency of anxiety disorders in a large sample of depressed outpatients seeking treatment. Methods: Three hundred seventy-three depressed outpatients were interviewed with the Structured Clinical Interview for DSM-IV. Results: More than half of the patients met full criteria for a current anxiety disorder, and more than half of the patients with an anxiety disorder had more than one. When partial remissions and not otherwise specified (NOS) diagnoses were included, then two-thirds of the patients had a current anxiety disorder and three-quarters had a lifetime history of an anxiety disorder. Conclusions: The majority of patients with a principal diagnosis of unipolar major depressive disorder have a comorbid anxiety disorder. Because antidepressant medications have differential efficacies in the treatment of anxiety disorders, knowledge of the presence of a comorbid anxiety disorder in depressed patients may have treatment implications.

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