Major depressive disorder epidemiology and demographics

The one-year prevalence of major depressive disorder is approximately 7,000 per 100,000 (7%) of the overall population with marked differences by age groups.

• The annual incidence (the number of new cases) of a major depressive episode has been estimated as 1.59% (1.89% in women and 1.10% in men). ^[1]

• The twelve-month prevalence of major depressive disorder is 7,000 per 100,000 (7%) of the overall population.^[1]

• There are marked differences by age groups; for example, the prevalence of major depressive disorder in individuals aged 18-29-year-old is x3 higher than the prevalence in the individuals aged 60-year-old and more. In individuals with the onset of major depressive disorder in early adolescence, the prevalence is 1.5- to 3-fold higher in females than in males. ^[1]

• Major depressive disorder is more common in women. ^[1]

• Depressive disorders are more common among single and divorced individuals compared with married individuals. ^[1]
• There is no association between depressive disorders and socioeconomic status or religion.

• There is no racial predilection to depressive disorders. ^[1]