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    Characterization of Severe Asthma Worldwide: Data From the International Severe Asthma Registry.

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    Author
    Wang, E; Wechsler, ME; Tran, TN; Heaney, LG; Jones, RC; Menzies-Gow, AN; Busby, J; Jackson, DJ; Pfeffer, PE; Rhee, CK; ...
    Date
    2020-04
    Source Title
    Chest
    Publisher
    Elsevier BV
    University of Melbourne Author/s
    Hew, Mark
    Affiliation
    Medicine and Radiology
    Metadata
    Show full item record
    Document Type
    Journal Article
    Citations
    Wang, E., Wechsler, M. E., Tran, T. N., Heaney, L. G., Jones, R. C., Menzies-Gow, A. N., Busby, J., Jackson, D. J., Pfeffer, P. E., Rhee, C. K., Cho, Y. S., Canonica, G. W., Heffler, E., Gibson, P. G., Hew, M., Peters, M., Harvey, E. S., Alacqua, M., Zangrilli, J. ,... Price, D. B. (2020). Characterization of Severe Asthma Worldwide: Data From the International Severe Asthma Registry.. Chest, 157 (4), pp.790-804. https://doi.org/10.1016/j.chest.2019.10.053.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/252381
    DOI
    10.1016/j.chest.2019.10.053
    Abstract
    BACKGROUND: Clinical characteristics of the international population with severe asthma are unknown. Intercountry comparisons are hindered by variable data collection within regional and national severe asthma registries. We aimed to describe demographic and clinical characteristics of patients treated in severe asthma services in the United States, Europe, and the Asia-Pacific region. METHODS: The International Severe Asthma Registry retrospectively and prospectively collected data in patients with severe asthma (≥ 18 years old), receiving Global Initiative for Asthma (GINA) Step 5 treatment or with severe asthma remaining uncontrolled at GINA Step 4. Baseline demographic and clinical data were collected from the United States, United Kingdom, South Korea, Italy, and the Severe Asthma Web-based Database registry (including Australia, Singapore, and New Zealand) from December 2014 to December 2017. RESULTS: We included 4,990 patients. Mean (SD) age was 55.0 (15.9) years, and mean (SD) age at asthma onset was 30.7 (17.7) years. Patients were predominantly female (59.3%) and white (72.6%), had never smoked (60.5%), and were overweight or obese (70.4%); 34.9% were at GINA Step 5; and 57.2% had poorly controlled disease. A total of 51.1% of patients were receiving regular intermittent oral corticosteroids, and 25.4% were receiving biologics (72.6% for those at GINA Step 5). Mean (SD) exacerbation rate was 1.7 (2.7) per year. Intercountry variation was observed in clinical characteristics, prescribed treatments, and biomarker profiles. CONCLUSIONS: Using a common data set and definitions, this study describes severe asthma characteristics of a large patient cohort included in multiple severe asthma registries and identifies country differences. Whether these are related to underlying epidemiological factors, environmental factors, phenotypes, asthma management systems, treatment access, and/or cultural factors requires further study.

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