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Asthma prevalence in Melbourne schoolchildren: have we reached the peak?

Colin F Robertson, Mary F Roberts and Johanna H Kappers
Med J Aust 2004; 180 (6): 273-276.

Summary

Objective: To determine the change in prevalence of asthma, eczema and allergic rhinitis in Australian schoolchildren between 1993 and 2002.

Design: Questionnaire based survey, using the protocol of the International Study of Asthma and Allergy in Childhood.

Setting: Metropolitan Melbourne primary schools within a 20 km radius of the GPO in 1993 and 2002.

Subjects: All children in school years 1 and 2 (ages 6 and 7) attending a random sample of 84 schools in 1993 and 63 schools in 2002.

Main outcome measures: Parent-reported symptoms of atopic disease; treatment for asthma; country of birth.

Results: There was a 26% reduction in the 12-month period prevalence of reported wheeze, from 27.2% in 1993 to 20.0% in 2002. The magnitude of reduction was similar for boys (27%) and girls (25%). The 12-month period prevalence of reported eczema increased from 11.1% in 1993 to 17.2% in 2002, and rhinitis increased from 9.7% to 12.7%. There were reductions in the proportion of children attending an emergency department for asthma in the previous year (3.6% to 2.3%), the proportion admitted to hospital (1.7% to 1.1%) and the proportion taking asthma medication (18.5% to 13.4%). Of those who reported frequent wheeze, there was an increase in the proportion taking regular inhaled steroids (34.5% to 40.9%).

Conclusion: There has been a significant reduction in the prevalence of reported asthma in Melbourne schoolchildren, whereas the prevalence of eczema and allergic rhinitis has continued to increase.

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  • Colin F Robertson1
  • Mary F Roberts2
  • Johanna H Kappers3

  • Department of Respiratory Medicine, Royal Children’s Hospital, Parkville, VIC.

Correspondence: 

  • 1. Magnus P, Jaakkola JJ. Secular trend in the occurrence of asthma among children and young adults: critical appraisal of repeated cross sectional surveys. BMJ 1997; 314: 1795-1799.
  • 2. Woolcock AJ, Bastiampillai SA, Marks GB, Keena VA. The burden of asthma in Australia. Med J Aust 2001; 175: 141-145. <MJA full text>
  • 3. Downs SH, Marks GB, Sporik R, et al. Continued increase in the prevalence of asthma and atopy. Arch Dis Child 2001; 84: 20-23.
  • 4. Robertson CF, Dalton MF, Peat JK, et al. Asthma and other atopic diseases in Australian children. Australian arm of the International Study of Asthma and Allergy in Childhood. Med J Aust 1998; 168: 434-438. <MJA full text>
  • 5. Worldwide variations in the prevalence of asthma symptoms: the International Study of Asthma and Allergies in Childhood (ISAAC). Eur Respir J 1998; 12: 315-335.
  • 6. Asher I, Kiel U, Anderson HR. International study of asthma and allergies in childhood (ISAAC): rationale and methods. Eur Respir J 1995; 8: 483-491.
  • 7. Stata [computer program]. Version 8. College Station, Tex: Stata Corporation, 2003.
  • 8. Toelle B, Ng K, Belousova E, et al. Trends in the prevalence of asthma over 20 years in Belmont NSW, Australia [abstract]. Am J Respir Crit Care Med 2003; 167: A470.
  • 9. Goh D, Wang X, Tan T, et al. The changing prevalence of asthma and allergies in school-going children in Singapore: a preliminary report of two studies 7 years apart using the ISAAC protocol [abstract]. Am J Respir Crit Care Med 2003; 167: A471.
  • 10. Wong G, Leung T, Ko F, et al. No evidence of increase in asthma prevalence in Hong Kong Chinese children [abstract]. Am J Respir Crit Care Med 2003; 167: A471.
  • 11. Bauman A. Has the prevalence of asthma symptoms increased in Australian children? J Paediatr Child Health 1993; 29: 424-428.
  • 12. Jenkins MA, Clarke JR, Carlin JB, et al. Validation of questionnaire and bronchial hyperresponsiveness against respiratory physician assessment in the diagnosis of asthma. Int J Epidemiol 1996; 25: 609-616.
  • 13. Oddy WH, Peat JK, de Klerk NH. Maternal asthma, infant feeding, and the risk of asthma in childhood. J Allergy Clin Immunol 2002; 110: 65-67.
  • 14. von Mutius E, Weiland S, Fritzsch C, et al. Increasing prevalence of hay fever and atopy among children in Leipzig, East Germany. Lancet 1998; 351: 862-868.
  • 15. Peat JK, van den Berg RH, Green WF, et al. Changing prevalence of asthma in Australian children. BMJ 1994; 308: 1591-1596.

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