Prevalence and Incidence of Myopia
Prevalance of Myopia:
70 million Americans; over 25 percent of all adult Americans. ... see also overview of Myopia.
Prevalance Rate:
approx 1 in 3 or 25.74% or 70 million people in USA [Source statistic for calcuation: "70 million Americans; over 25 percent of all adult Americans." -- see also general information about data sources]
Myopia Prevalence: Book Excerpts
Prevelance statistics for Myopia:
The following statistics relate to the prevalence of Myopia:
- 1,685,000 men self-reported having short-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
- 18.3% of male population self-reported having short-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
- 2,257,000 women self-reported having short-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
- 20.9% of population self-reported having short-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
- 23.5% of female population self-reported having short-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
- 3,941,000 people self-reported having short-sightedness in Australia 2001 (ABS 2001 National Health Survey, Australia’s Health 2004, AIHW)
- more statistics...»
Prevalence/Incidence of Myopia: Online Medical Books
16 MEDICAL BOOKS ONLINE!
Review excerpts from medical books online, free, without registration,
for more information about the prevalence and/or incidence of Myopia.
Near drowning:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
Near drowning results from an inability to swim or, in swimmers, from panic, a boating accident, a heart attack or blow to the head while in the water, a fall through ice, heavy drinking prior to swimming, or a suicide attempt. Children can also suffer near drowning from swimming accidents, bathing, or falling into a container of water such as a bucket or a body of water such as a pond.
Regardless of the tonicity of the fluid aspirated, hypoxemia is the most serious consequence of near drowning, followed by metabolic acidosis. Other consequences depend on the kind of water aspirated. If the water is contaminated, such as water from a stagnant pool or contaminated stream, bacteria, fungus, or algae may be aspirated as well, causing infection or sepsis. After fresh water aspiration, changes in lung surfactant character result in exudation of protein-rich plasma into the alveoli. This, plus increased capillary permeability, leads to pulmonary edema and hypoxemia.
After saltwater aspiration, the hypertonicity of seawater exerts an osmotic force, which pulls fluid from pulmonary capillaries into the alveoli. The resulting intrapulmonary shunt causes hypoxemia. Also, the pulmonary capillary membrane may be injured and induce pulmonary edema. In both kinds of near drowning, pulmonary edema and hypoxemia occur secondary to aspiration.
In the United States, drowning claims nearly 6,500 lives annually. No statistics are available for near-drowning incidents.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Near Drowning:
Near Drowning - epidemiology
(The 5-Minute Pediatric Consult)
- Drowning is second only to motor vehicle collisions as the most common cause of death from unintentional injury in childhood.
- Bimodal age distribution with peak in children <5 years and again among adolescents 15–19 years
- Bathtub drowning is common in babies, and child neglect or abuse should be considered.
- Adolescent submersion injuries usually involve substance abuse or risk-taking behavior.
- Highest incidence in males, African Americans, children of low socioeconomic status, and residents of southern states
>
» READ BOOK EXCERPT ONLINE »
Source: The 5-Minute Pediatric Consult, 2008
About prevalence and incidence statistics:
The term 'prevalence' of Myopia usually refers to the estimated population
of people who are managing Myopia at any given time.
The term 'incidence' of Myopia refers to the annual diagnosis rate,
or the number of new cases of Myopia 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.
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