Prevalence and Incidence of Stroke


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About prevalence and incidence statistics: The term 'prevalence' of Stroke usually refers to the estimated population of people who are managing Stroke at any given time. The term 'incidence' of Stroke refers to the annual diagnosis rate, or the number of new cases of Stroke diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.

Prevalance of Stroke: estimated 4.6 million (NHLBI)
Prevalance Rate: approx 1 in 59 or 1.69% or 4.6 million people in USA [about data]
Incidence (annual) of Stroke: 600,000 annually (CDC) including 500,000 new cases and 100,000 recurrences.
Incidence Rate: approx 1 in 453 or 0.22% or 600,000 people in USA [about data]
Worldwide incidence of Stroke:estimated 15 million people worldwide survive minor strokes each year (Cardiovascular Diseases – Prevention and Control, WHO, 2001-2002)

Prevelance of Stroke discussion: 2 million women have had a stroke, and 93,000 women die of stroke each year.1

Stroke is the third leading cause of death in the United States after heart disease and cancer. It is a major cause of disability among adults and a major factor in late-life dementia. The incidence of stroke is on the rise.2

Prevelance statistics about Stroke: The following statistics relate to the prevalence of Stroke:

  • Estimated 4,800,000 in the USA 2001 (American Heart Association, 2004)
  • 4,700,000 cases in the USA (National Health and Nutrition Examination Survey III, 1988-94)
  • 4.8 million people had ever had a stroke in the US 2002 (Summary Health Statistics for US Adults, 2002, NCHS, CDC)
  • 2.4% of adults had ever had a stroke in the US 2002 (Summary Health Statistics for US Adults, 2002, NCHS, CDC)

Incidence statistics about Stroke: The following statistics relate to the incidence of Stroke:

  • 3.3 million annually (unclear source)
  • 3 million cases per year in the USA 1994 (US Government Statistics)
  • 50% of cases of stroke each year are in women in the US (The National Women’s Health Information Center, CDC)
  • 40,000-48,000 strokes occur annually in Australia (Australia’s Health 2004, AIHW)


Footnotes:
1. excerpt from NHLBI Heart Disease & Women Are You At Risk: NHLBI
2. excerpt from Stroke Prevention and Treatment - Age Page - Health Information: NIA

Last revision: June 18, 2003

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