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Chronic Obstructive Lung Diseases and Prevalence of Mood, Anxiety, and Substance-Use Disorders in a Large Population Sample

Received March 8, 2006; revised June 30, 2006; accepted July 7, 2006. From the Department of Community Health Sciences, University of Calgary, Calgary, AB, Canada. Send correspondence and reprint requests to Scott B. Patten, M.D., Ph.D., 3330 Hospital Dr. NW, Calgary, AB, Canada T2N 4N1. e-mail: patten{at}ucalgary.ca
©2007 The Academy of Psychosomatic Medicine

Only a few population-based studies have examined prevalence of mental disorder in people with chronic respiratory conditions. Clinical studies have yielded mixed results. In this analysis, data from the 2002 Canadian Community Health Survey (CCHS) were used. This was a national health survey that included administration of the World Mental Health Composite International Diagnostic Interview to a sample of 36,984 subjects. Participants were asked about chronic medical conditions that had been diagnosed by a health professional. Chronic respiratory conditions were associated with major depressive disorder, bipolar disorder, panic disorder (including agoraphobia), social phobia, and substance dependence. Although the observed associations were statistically highly significant, the prevalence estimates were lower than previous reports from studies using clinical samples, suggesting that selection bias may have influenced some estimates.

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