Epidemiology
The estimated annual incidence of TGA varies from a minimum of 2.9 cases per 100,000 population (in Spain) and 5.2 per 100,000 (in USA), but among people aged over 50, the rate of TGA incidence is reported to range from approximately 23 per 100,000 (in a US population) to 32 per 100,000 (in a population in Scandinavia).
TGA is most common in people between age 56 and 75, with the average age of a person experiencing TGA being approximately 62.
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