| http://www.w3.org/ns/prov#value | - Its prevalence is 26% in adults older than 65 years1 and up to 40% in those older than 75 years.2 In an echocardiographic study of nonagenarians, only 10% had a normal aortic valve.3 The fact that the majority of elderly people do not have AVT implies that risk factors other than age play a role in its pathogenesis.
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