asthma
Item
known history of asthma (intermittent wheezing, cough, dyspnoea responsive to inhaled short acting beta agonists).
boolean
C0004096 (UMLS CUI [1])
fev1
Item
fev1 >65% of predicted on at least two occasions at screening.
boolean
C0748133 (UMLS CUI [1])
fev1 after allergen challenge
Item
at the screening allergen challenge, a decrease in fev1 of ≥20% in the early asthmatic reaction and of ≥15% in the lar to allergen on 3 separate occasions between 3-10hrs post allergen, 2 of which must be consecutive.
boolean
C0006265 (UMLS CUI [1,1])
C0748133 (UMLS CUI [1,2])
steroid usage
Item
no steroid usage in the past 12 weeks.
boolean
C0038317 (UMLS CUI [1])
skin prick challenge
Item
testing positive to skin prick challenge with at least one of the following allergens: house dust mite, pollen or cat hair within the previous 12 months.
boolean
C0430561 (UMLS CUI [1,1])
C0057489 (UMLS CUI [1,2])
C0032385 (UMLS CUI [1,3])
C0440419 (UMLS CUI [1,4])
smoking, pack years
Item
non smokers for a minimum of 6 months; less than 10 pack year history.
boolean
C0543414 (UMLS CUI [1])
C1277691 (UMLS CUI [2])
respiratory tract disease
Item
respiratory tract pathology other than allergic asthma.
boolean
C0035242 (UMLS CUI [1])
lower respiratory tract infection
Item
lower respiratory tract infection within 4 weeks prior to an allergen challenge.
boolean
C0149725 (UMLS CUI [1])
medication other than paracetamol or short acting beta agonists
Item
receipt of prescribed or otc medication other than paracetamol or short acting inhaled beta agonists within 14 days of screening or of the first day of each dosing period.
boolean
C0013227 (UMLS CUI [1,1])
C0000970 (UMLS CUI [1,2])
C0001644 (UMLS CUI [1,3])