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Asthma; Author: Centers for Disease control and Prevention: Unique ID of original document: ... Adobe PDF Library 9.9: Encrypted: no: Page size: 612 x 792 pts (letter)
Occupational epidemiology is a subdiscipline of epidemiology that focuses on investigations of workers and the workplace. [1] [2] Occupational epidemiologic studies examine health outcomes among workers, and their potential association with conditions in the workplace including noise, chemicals, heat, or radiation, or work organization such as schedules.
Life expectancy development in some big countries of the world since 1960 Life expectancy at birth, measured by region, between 1950 and 2050 Life expectancy by world region, from 1770 to 2018 Human life expectancy is a statistical measure of the estimate of the average remaining years of life at a given age.
The epidemiology of chronic disease is diverse and the epidemiology of some chronic diseases can change in response to new treatments. In the treatment of HIV, the success of anti-retroviral therapies means that many patients will experience this infection as a chronic disease that for many will span several decades of their chronic life. [32]
Life expectancies are not the same at different ages. For example, in the Paleolithic era, life expectancy at birth was 33 years, but life expectancy at the age of 15 was an additional 39 years (total 54). [8] Historically Japanese life expectancy statistics have been used as the standard for measuring premature death, as the Japanese have the ...
The airways of asthma patients are "hypersensitive" to certain triggers, also known as stimuli (see below). (It is usually classified as type I hypersensitivity .) [ 4 ] [ 5 ] In response to exposure to these triggers, the bronchi (large airways) contract into spasm (an "asthma attack").
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Very severe acute asthma (termed "near-fatal" as there is an immediate risk to life) is characterised by a peak flow of less than 33% predicted, oxygen saturations below 92% or cyanosis (blue discoloration, usually of the lips), absence of audible breath sounds over the chest ("silent chest" : wheezing is not heard because there is not enough ...