age
Item
aged 5-60 years
boolean
C0001779 (UMLS CUI [1])
asthma diagnosis and medication
Item
Evidence of asthma: a diagnostic code of asthma or ≥2 prescriptions for asthma in baseline year at different points in time including one of ics
boolean
C0004096 (UMLS CUI [1])
C0087111 (UMLS CUI [2])
C3248292 (UMLS CUI [3])
current asthma therapy at IPD
Item
On current therapy at the ipd, defined as ≥1 ics script and ≥1 other asthma prescriptions in the 12 months prior to first change in therapy
boolean
C0087111 (UMLS CUI [1,1])
C0004096 (UMLS CUI [1,2])
C3248292 (UMLS CUI [2])
definite dosing instructions
Item
Had definite dosing instructions
boolean
C1442085 (UMLS CUI [1,1])
C0678766 (UMLS CUI [1,2])
up-to-standard baseline data
Item
Have at least 1 year of up-to-standard (uts) baseline data before ipd
boolean
C0811983 (UMLS CUI [1,1])
C1442488 (UMLS CUI [1,2])
uts outcome data
Item
Have at least 1 year of uts outcome data after ipd.
boolean
C0811983 (UMLS CUI [1,1])
C0086749 (UMLS CUI [1,2])
COPD
Item
Had a diagnostic read code for chronic obstructive pulmonary disease (copd) at any time
boolean
C0024117 (UMLS CUI [1])
chronic respiratory disease
Item
Had a diagnostic read code for chronic respiratory disease at any time
boolean
C0035204 (UMLS CUI [1])
combination inhaler
Item
For the therapy increase patient cohort, any patients receiving a combination inhaler in addition to their separate ics inhaler in the year prior to ipd were also excluded.
boolean
C0021461 (UMLS CUI [1,1])
C1516710 (UMLS CUI [1,2])