Case–control comparison over the 2 years prior to Achromobacter xylosoxidans initial infection

FEV1 % pred88.0±1892.7±170.3
BMI z-score0.03±0.9−0.03±0.90.8
Annual rate of respiratory exacerbations2.8±1.72.0±1.30.02*
Annual rate of hospitalisations0.1±0.400.05*
Annual rate of oral antibiotic courses3.7±1.82.4±1.60.001*
Annual rate of intravenous antibiotic courses0.4±0.90.12±0.40.03*
Pseudomonas aeruginosa colonisation64 (29)24 (11)0.0002*
MRSA colonisation9 (4)9 (4)0.9

Data are presented as mean±sd or % (n) over the 2 years prior to A. xylosoxidans initial infection for the cases (between T−24 and T0). FEV1: forced expiratory volume in 1 s; BMI: body mass index; MRSA: methicillin-resistant Staphylococcus aureus. #: for the comparison of sex, age, CFTR genotypes and pancreatic status matched cases and controls. *: p<0.05.