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. Author manuscript; available in PMC: 2011 Nov 1.
Published in final edited form as: Inflamm Bowel Dis. 2010 Nov;16(11):1957–1962. doi: 10.1002/ibd.21277

Table 2.

The Criteria for Asthma

Patients were considered to have definite asthma if a physician had made a diagnosis of asthma or if each of the following 3 conditions were present. Patients were considered to have probable asthma if the first 2 of the following 3 conditions were present:

  1. History of cough and /or dyspnea, plus wheezing, OR history of cough and / Or dyspnea plus wheezing on examination.

  2. Substantial variability in symptoms from time to time or periods of weeks or more when symptoms were absent, and

  3. Two or more of the following
    • Nocturnal cough
    • Non smoker (14 years or older)
    • Nasal polyps
    • Blood eosinophilia
    • Positive wheal and flare skin tests or elevated IgE
    • History of atopy (atopic conditions)
    • Pulmonary function tests showing one FEV1 or FVC less than 70% predicted or methacholine challenge test showing greater than 20% or greater decrease in FEV1
    • Favorable clinical response to bronchodilator