Essential thrombocytosis epidemiology and demographics

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

==Overview==Essential thrombocytosis is a rare idiopathic condition affecting about 24 for every million people in the world. Although ET can present at any age, the disease usually affects middle aged to elderly individuals, with an average age at diagnosis being 50-70 years.

Epidemiology

• Essential thrombocytosis is a rare idiopathic condition affecting about 24 for every million people in the world. Although ET can present at any age, the disease usually affects middle aged to elderly individuals, with an average age at diagnosis being 50-70 years.
• ET has a bimodal presentation in that it presents in people in their 60's while the other peak occurs in the 30's.
• Females in their third decade of life are slightly affected more than the males at same age, the male to female ratio being 1.5-2:1. Patients in the 6th decade of life usually have same incidence in both males and females

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