The worldwide incidence of aortic dissection is 0.5 to 2.95 cases per 100,000 people annually.[5] The incidence in the US is 0.2 to 0.8 cases per 100,000 people annually, resulting in about 2000 new cases each year.[5] Aortic dissection may be more common in Europe; one prospective UK-based population study derived an incidence of 6 cases per 100,000 when out-of-hospital deaths were included.[6] Men are predominantly affected, typically older than 50 years of age.

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