Asthma Statistics

View or download data tablesgraphs, and maps depicting Ontario asthma incidence, prevalence and health services use, as well as mean distributions of air quality measurements.

Note: Detailed data tables are available to the public from OASIS, upon request.

Individuals with asthma were identified using a previously validated health administrative data case definition for asthma:
≥ 2 outpatient claims in 2 consecutive years or ≥ 1 hospitalizations(s) for asthma with a sensitivity of 84 per cent and a specificity of 76 per cent when compared to a clinical reference standard.1,2

1To T, Cicutto L, Dell S, Dick PT, MacLusky I. Case verification of children with asthma in Ontario. Pediatric Allergy and Immunology 2006; 17:69-76.
2Gershon AS, Wang C, Guan J, Vasilevska-Ristovska J, Cicutto L, To T. Identifying patients with physician diagnosed asthma in health administrative databases. Can Respir J. 2009 Nov-Dec;16(6):183-8.

Copyright © 2012 Ontario Asthma Surveillance Information System (OASIS). All rights reserved. No parts of our reported tables, graphs or maps may be reproduced or submitted to any media including journal, magazines, newspapers, radio or TV without the proper written permission of OASIS and ICES.

Users of our statistics will include the following disclaimer and acknowledgement in citations of parts or all of the asthma statistics provided by OASIS:

This presentation (as appropriate) uses asthma statistics reported by the Ontario Asthma Surveillance Information System (OASIS) and data provided by the Institute for Clinical Evaluative Sciences (ICES), Ontario