Generalized anxiety disorder epidemiology and demographics
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Overview
Generalized anxiety disorder is relatively common and has a lifetime prevalence of about 4-7% in the general population. It is more common in women, and can develop in any age although it more commonly occurs in the third and fourth decade of life. Approximately one quarter of the patients with generalized anxiety disorder, will develop panic disorder.
Prevalence
The World Health Organization's Global Burden of Disease project did not include generalized anxiety disorders.[1] In lieu of global statistics, here are some prevalence rates from around the world:
- Australia: 3 percent of adults[1]
- Canada: Between 3-5 percent of adults[2]
- Italy: 2.9 percent[3]
- Taiwan: 0.4 percent[3]
- United States: approx. 3.1 percent of people age 18 and over in a given year (6.8 million)[4]
Age
The disorder most commonly has its onset in the third decade of life, and mostly occurs in persons under the age of 30 years old. Generalized anxiety disorder can be seen in any age.
Gender
Generalized anxiety disorder is more commonly seen in females. This may partly be due to the increased tendency of women to report symptoms.
Race
Generalized anxiety disorder is more common in African americans.