Table 4.

Factors associated with a more significant reduction in FEV1% in the total group of patients.

Variable	Coefficient β	95% CI	p
Age	−2	−3, −2	<0.001
Inhaled corticosteroids	−31	−52, −10	0.004
CBI caused by SA	−28	−48, −8	0.007
Gender	−42	−59, −24	<0.001
FEV1 baseline	−90	−93, −86	<0.001

CBI: Chronic broncuial infection; SA: Staphylococcus aureus; FEV1: Forced expiratory volume one second.