Prevalence of asthma

Is no longer increasing in some countries, but the reasons for this are unclear A broad consensus exists that in most Western countries the prevalence of asthma increased over the last four decades of the 20th century. This is based largely on repeat studies of school age children. Evidence is emerging that in recent years this trend has flattened or fallen in some countries. For example, as part of the UK arm of the international study of asthma and allergies in childhood (ISAAC), repeat studies found that self reported symptoms of asthma in 13-14 year old children had fallen by about 20% in the United Kingdom between 1995 and 2002.1 This trend was also observed in the health survey for England between 1996 and 2001.2 Over the same period a similar fall in symptoms of asthma in 6-7 year old children reported by parents was seen in Melbourne.3 On the other hand, the only available repeat survey of preschool children noted …

[1]  N. Pearce,et al.  How much asthma is really attributable to atopy? , 1999, Thorax.

[2]  R. Beasley,et al.  The international study of asthma and allergies in childhood (ISAAC): phase three rationale and methods. , 2005, The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease.

[3]  M. Silverman,et al.  Wheezing phenotypes in childhood. , 1997, Thorax.

[4]  D. Hendrick,et al.  Apparent but not real increase in asthma prevalence during the 1990s , 2002, European Respiratory Journal.

[5]  R. Bhopal.  Is research into ethnicity and health racist, unsound, or important science? , 1997, BMJ.

[6]  D. Strachan,et al.  Trends in prevalence of symptoms of asthma, hay fever, and eczema in 12-14 year olds in the British Isles, 1995-2002: questionnaire survey , 2004, BMJ : British Medical Journal.

[7]  Justin S. W. Taylor,et al.  Racial Differences in Responses to Drug Treatment , 2002, American journal of cardiovascular drugs : drugs, devices, and other interventions.

[8]  J. Critchley,et al.  Factors determining the maintenance dose of warfarin in Chinese patients. , 1996, QJM : monthly journal of the Association of Physicians.

[9]  R. Bhopal,et al.  Glossary of terms relating to ethnicity and race: for reflection and debate , 2004, Journal of Epidemiology and Community Health.

[10]  J. Kahn.  How a drug becomes "ethnic": law, commerce, and the production of racial categories in medicine. , 2004, Yale journal of health policy, law, and ethics.

[11]  D. Strachan.  Family size, infection and atopy: the first decade of the 'hygiene hypothesis' , 2000, Thorax.

[12]  Ralph D'Agostino,et al.  Combination of isosorbide dinitrate and hydralazine in blacks with heart failure. , 2004, The New England journal of medicine.

[13]  C. Robertson,et al.  Asthma prevalence in Melbourne schoolchildren: have we reached the peak? , 2004, The Medical journal of Australia.

[14]  P. Magnus,et al.  Treatment of herpes simplex gingivostomatitis with aciclovir in children: a randomised double blind placebo controlled study , 1997, BMJ.

[15]  J. Sanderson,et al.  Heparin therapy in the Chinese--lower doses are required. , 1997, QJM : monthly journal of the Association of Physicians.

[16]  R. Kittles,et al.  Implications of correlations between skin color and genetic ancestry for biomedical research , 2004, Nature Genetics.

[17]  C. Kuehni,et al.  Are all wheezing disorders in very young (preschool) children increasing in prevalence? , 2001, The Lancet.

[18]  Madhavi Bajekal,et al.  Health Survey for England , 2004 .

[19]  S. Johnston,et al.  Words matter , 1997 .

[20]  Judith B. Kaplan,et al.  Use of race and ethnicity in biomedical publication. , 2003, JAMA.