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A review that pooled surveys of mood disorders in different countries up to 2000 found 12-month prevalence rates of 4.1% for major depressive disorder (MDD), 2% for dysthymic disorder and 0.72% for bipolar 1 disorder. The average lifetime prevalence found was 6.7% for MDD (with a relatively low lifetime prevalence rate in higher-quality studies ...
In Europe, Africa, and Asia, lifetime rates of anxiety disorders are between 9 and 16%, and yearly rates are between 4 and 7%. [102] In the United States, the lifetime prevalence of anxiety disorders is about 29%, [103] and between 11 and 18% of adults have the condition in a given year. [102]
Mental, neurological, and substance use disorders make a substantial contribution to the global burden of disease (GBD). [12] This is a global measure of so-called disability-adjusted life years (DALY's) assigned to a certain disease/disorder, which is a sum of the years lived with disability and years of life lost due to this disease within the total population.
A review of anxiety disorder surveys in different countries found average lifetime prevalence estimates of 16.6%, with women having higher rates on average. [151] A review of mood disorder surveys in different countries found lifetime rates of 6.7% for major depressive disorder (higher in some studies, and in women) and 0.8% for Bipolar I disorder.
The global proportion of people affected by anxiety disorders is between 2.5 and 6.5%. Australia, Brazil, Argentina, Iran, the United States, and a number of countries in Western Europe appear to have a higher prevalence of anxiety disorders. [56]
Generalized anxiety disorder (GAD) is an anxiety disorder characterized by excessive, uncontrollable and often irrational worry about events or activities. [5] Worry often interferes with daily functioning, and individuals with GAD are often overly concerned about everyday matters such as health, finances, death, family, relationship concerns, or work difficulties.
The National Comorbidity Survey of over 8,000 American correspondents in 1994 revealed 12-month and lifetime prevalence rates of 7.9 percent and 13.3 percent, respectively; this makes it the third most prevalent psychiatric disorder after depression and alcohol use disorder, and the most common of the anxiety disorders. [199]
Specifically, anxiety was assessed in 12 studies, with a pooled prevalence of 23.2%. [131] One study reported that things changed drastically in a couple of months after the pandemic began. [48] It found that the prevalence rates of post-COVID anxiety were about 32%. Participants with moderate to extremely severe anxiety made up 26% of the ...