The Course of Panic Attacks and Agoraphobia

Abstract
To the Editor.— Breier et al,1in the November 1986 issue of theARCHIVES, reported retrospective data on the course of panic disorder and agoraphobia. A major finding was the chronicity of anticipatory anxiety, generalized anxiety, agoraphobia, and frequent panic attacks. The problem with these findings is that the sample may be biased for chronicity: 28 of the 60 patients had a history of anxiety disorders longer than ten years. It may be that these patients came to the research treatment program because their conditions were refractory to treatment received in a primary care setting. Patients with a more favorable course that remits during treatment often never see a psychiatrist. Previous follow-up studies2of anxiety disorders are similarly biased; the retrospective method may increase this bias. The hypothesis of chronicity in anxiety disorders therefore needs support from prospective studies in population samples. We had the opportunity to perform

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