Prevalence and Incidence of Asthma


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About prevalence and incidence statistics: The term 'prevalence' of Asthma usually refers to the estimated population of people who are managing Asthma at any given time. The term 'incidence' of Asthma refers to the annual diagnosis rate, or the number of new cases of Asthma 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 Asthma: 6.4% USA (NIAID); 17 million Americans (NIAID) including 5 million children; 8.1 million children (NHIS-97), 51 per 1000 - NHIS95; 14.5 million; 5% of population (NWHIC); 14.9 million in 1995 (NHLBI)
Prevalance Rate: approx 1 in 15 or 6.40% or 17.4 million people in USA [about data]
Prevalance of Asthma: Asthma affects an estimated 17 million Americans or 6.4 percent of the U.S. population. Children account for 4.8 million of the nation's asthma sufferers.1 ... Approximately 5% of the population have asthma, but the basic cause of asthma is not yet understood.2

Prevelance of Asthma discussion: Asthma affects 14-15 million Americans, including almost 5 million children. 3

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

  • Asthma affects 10-12% of adults in Australia (Australia’s Health 2004, AIHW)
  • Asthma affects 14-16% of children in Australia (Australia’s Health 2004, AIHW)
  • 11.6% of population self-reported having asthma in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
  • 10.5% of male population self-reported having asthma in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
  • 11.5 girls per 100 population under 14 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 12.6% of female population self-reported having asthma in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
  • 12.9 women per 100 population over 15 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 15.1 boys per 100 population under 14 have at some time been diagnosed in Australia 2001 (Australia’s Health 2004, AIHW)
  • 17.7 men per 100 population over 15 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 20.5 girls per 100 population under 14 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 21.4 women per 100 population over 15 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 26.6 boys per 100 population under 14 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 9.4 men per 100 population over 15 have at some time been diagnosed with asthma in Australia 2001 (Australia’s Health 2004, AIHW)
  • 2,197,000 people self-reported having asthma in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
  • 1,203,000 women self-reported having asthma in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
  • 993,000 men self-reported having asthma in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
  • 6.4 million children were diagnosed with asthma in the US 2002 (Summary Health Statistics for US Children, 2002, NCHS, CDC)
  • 12.2% of children were diagnosed with asthma in the US 2002 (Summary Health Statistics for US Children, 2002, NCHS, CDC)
  • 4.1 million children had an asthma attack in the past year in the US 2002 (Summary Health Statistics for US Chidren, 2002, NCHS, CDC)
  • 5.8% of children had an asthma attack in the past year in the US 2002 (Summary Health Statistics for US Chidren, 2002, NCHS, CDC)

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

  • Estimated 1.7 million diagnosed African Americans had an asthma attack in America 1998 (CBCF Health Organisation, 2004)
  • 26% higher rate of asthma attacks in African American children than white in America (CBCF Health Organisation, 2004)
  • 14 million adults were diagnosed with asthma each year in the US 2002 (Summary Health Statistics for US Adults, 2002, NCHS, CDC)
  • 6.8% of adults were diagnosed with asthma each year in the US 2002 (Summary Health Statistics for US Adults, 2002, NCHS, CDC)


Footnotes:
1. excerpt from Asthma A Concern for Minority Populations, NIAID Fact Sheet: NIAID
2. excerpt from ASTHMA: NWHIC
3. excerpt from Facts About Asthma: CDC-OC

Last revision: April 9, 2003

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