Table 1

 Median (interquartile range) demographic data of study patients

PANGNBCOGN
FEV1, forced expiratory volume in 1 second; PA, Pseudomonas aeruginosa; NGN, no Gram negative infection; BC, Burkholderia cenocepacia; OGN, other Gram negative infection.
Age (years)24 (20–26.5)26 (22.5–29)25.5 (19.5–31)33 (no IQR)
Sex (F/M)6/45/46/42/3
FEV1 (l)2.6 (2.0–3.2)2.6 (2.1–2.9)2.5 (1.1–3.4)1.9 (no IQR)
FEV1 (% predicted)70.2 (65.1–89.7)75.0 (65.1–94.0)67.2 (40.6–86.5)62.6 (no IQR)
C-reactive protein (mg/ml)3.0 (1.0–4.0)4.0 (1.5–8.0)9.0 (2.0–15.0)3.0 (no IQR)
Blood neutrophils (×109 cells/l)4.4 (3.2–9.7)4.5 (3.8–5.9)6.2 (4.3–9.8)3.4 (no IQR)
White cell count (×109 cells/l)7.3 (6.4–9.9)8.2 (7.5–8.8)8.9 (7.4–13.8)6.7 (no IQR)
Total cells (×106/g sputum)4.2 (3.2–14.4)5.2 (0.7–7.4)3.6 (0.9–12.2)3.1 (no IQR)