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Anxiety disorders are the most commonly experienced mental health problems in the United States. Narrow, Rae, Robins, and Regier (2002), combining data from the National Institute of Mental Health Epidemiologic Catchment Area Program (ECA) and the National Comorbidity Survey (NCS), conservatively estimated the one-year prevalence for any anxiety disorder to be 13.1% for adults aged 18–54. These conditions...