The Epidemiology of Anxiety Disorders: Prevalence and Societal Costs
J Clin Psychiatry 2002;63(suppl 14):4-8
© Copyright 2015 Physicians Postgraduate Press, Inc.
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Anxiety disorders are the most prevalent of psychiatric disorders, yet less than 30% of individuals
who suffer from anxiety disorders seek treatment. Prevalence of anxiety disorders is difficult to pinpoint
since even small changes in diagnostic criteria, interview tools, or study methodology affect
results. Analyses of the largest prevalence studies of psychiatric illnesses in the United States find that
anxiety disorders afflict 15.7 million people in the United States each year, and 30 million people
in the United States at some point in their lives. Currently, the European Study of Epidemiology of
Mental Disorders and the World Health Organization World Mental Health 2000 studies are underway.
These studies, which share a similar methodology, will facilitate future worldwide comparisons
of the prevalence of anxiety disorders. Anxiety disorders impose high individual and social burden,
tend to be chronic, and can be as disabling as somatic disorders. Compared with those who have other
psychiatric disorders, people with anxiety disorders are high care utilizers who present to general
practitioners more frequently than to psychiatric professionals, placing a strain upon the health care
system. The economic costs of anxiety disorders include psychiatric, nonpsychiatric, and emergency
care; hospitalization; prescription drugs; reduced productivity; absenteeism from work; and suicide.