Table 2

Multivariate Cox regression analysis of predictors of acquiring PSA infection

BSEDfSig.HR95% CI for HR
Basal mMRC dyspnoea scale0.3400.11210.002*1.411.131.75
FEV1% predicted−0.1820.08810.038*0.830.700.99
Systemic corticosteroids use†−0.2540.18710.1750.780.541.12
ICS use−0.4990.43310.2490.610.261.42
ICS dose‡0.2320.11310.040*
  • *Significant p≤0.05.

  • †Systemic corticosteroids use>3 courses during the follow-up duration (2012–2020).

  • ‡Fluticasone propionate equivalents (daily dose).

  • FEV1, forced expiratory volume in 1 s; ICS, inhaled corticosteroids; mMRC, modified medical research council; PsA, Pseudomonas aeruginosa.