ABC Of Allergies pdf

ABC Of Allergies pdf
ABC Of Allergies BMJ
ABC Of Allergies free download
ABC Of Allergies ebook

Prevalence

Time trends
The prevalence of diseases associated with atopy has increased
in many parts of the world over the past 20 to 30 years. In the
United Kingdom the prevalence of diagnosed asthma and
symptoms strongly suggestive of asthma in children has
increased at a rate of about 5% a year. Increases of a similar
magnitude have been observed in Sweden, Switzerland, Norway,
the United States, Australia, New Zealand, and Taipei. Some of
this apparent rise may have occurred in response to greater
public awareness of asthma and a greater tendency of parents
to report wheezing illnesses in their children and to attend their
doctor for treatment of asthma.
Few serial surveys have examined an increase in objective
markers for asthma, although the prevalence of exercise
induced bronchial constriction has increased in Welsh
schoolchildren over 15 years, suggesting that the increase in
reported symptoms reflects a genuine change in health status.
Few reported serial surveys have examined the prevalence of
asthma in adults, although the proportion of military recruits
with asthma has increased in Finland, Sweden, and Israel.