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In 2000-2001 asthma prevalence was monitored at 6.5%; by 2010-2011 a 4.3% increase was shown, with asthma prevalence totaling 10.8% of Canada's population. [29] Furthermore, asthma prevalence varies among the provinces of Canada; the highest prevalence is Ontario at 12.1%, and the lowest is Nunavut at 3.8%. [29]
Asthma phenotyping and endotyping has emerged as a novel approach to asthma classification inspired by precision medicine which separates the clinical presentations of asthma, or asthma phenotypes, from their underlying causes, or asthma endotypes. The best-supported endotypic distinction is the type 2-high/type 2-low distinction.
"The influence of sensitisation to pollens and moulds on seasonal variations in asthma attacks" European Respiratory Journal. 42: 935-945. Ghosh RE, Cullinan P, Fishwick D, Hoyle J, Warburton CJ, Strachan DP, Butland BK, Jarvis D (2013). "Asthma and occupation in the 1958 birth cohort" Thorax. 68: 365-371.
Asthma phenotyping and endotyping is a novel approach to asthma classification inspired by precision medicine.It seeks to separate the clinical presentations or clusters of signs and symptoms of asthma, known as asthma phenotypes, from their underlying etiologies or causes, known as asthma endotypes.
The prevalence of asthma increased 75% from 1980 to 1994. Asthma prevalence is 39% higher in African Americans than in Europeans. [148] 5.7 million (about 9.4%). In six- and seven-year-olds asthma increased from 18.4% to 20.9% over five years, during the same time the rate decreased from 31% to 24.7% in 13- to 14-year-olds. Atopic eczema
An overall prevalence of 2.5% has been reported in patients presenting with asthma. [19] Among adults with asthma considered "difficult to control", 10% were found to have VCD while 30% were found to have both VCD and asthma. [6] Among children with severe asthma, a VCD prevalence rate of 14% has been reported. [6]
Sensitizer-induced occupational asthma is an immunologic form of asthma which occurs due to inhalation of specific substances (i.e., high-molecular-weight proteins from plants and animal origins, or low-molecular-weight agents that include chemicals, metals and wood dusts) and occurs after a latency period of several weeks to years. [1]
In a study of 341 schoolchildren, Bernard and his colleagues found that long-term attendance at indoor chlorinated swimming pools by the children up to the age of about 6–7 years was a strong predictor of airway inflammation (measured by exhaled nitric oxide) independently of other factors, while for those children susceptible to allergic problems, as defined by having a blood serum level of ...