Table 3.

Additional covariates adjusted for in the conditional logistic regression analysis

Characteristic	Exposed (479), mean (±SD)	Unexposed (958), mean (±SD)	p Value
Adherence to ICS therapy (PDC)	0.47 (0.27)	0.51 (0.28)	0.0146*
Average no. of short-acting β agonist prescriptions per subject	2.74 (2.10)	3.49 (2.85)	<0.0001*
No. of asthma office and laboratory visits 6 months prior the index date	0.21 (0.64)	0.24 (0.65)	0.5031
No. of asthma hospitalisation events 6 months prior the index date	0.03 (0.19)	0.05 (0.24)	0.1002
No. of asthma ER events 6 months prior the index date	0.02 (0.14)	0.06 (0.29)	0.0063*

*p<0.05.

ICS, inhaled corticosteroids; PDC, proportion of days covered.