Table 4

Comparison of age and lung function in the children with cystic fibrosis (CF) who did not show chronic colonisation and the healthy control children

CF (noncolonised)ControlsCF‐controls
Patients n2928
Age yrs9.3 (3.9)11.5 (3.2)−4.0–−0.2*
FEV1 % pred96.1 (13.9)96.9 (10.3)−7.3–5.7
MEF50 % pred#110.0 (36.0)107.0 (30.2)16.5–22.6
MEF25 % pred#79.1 (27.5)86.5 (28.2)−24.1–9.3
RV/TLC22.7 (5.4)22.8 (4.3)−2.9–2.7
MR1.47 (0.28)1.19 (0.08)0.17–0.39***
LCI7.6 (1.37)6.33 (0.43)0.73–1.81***
  • Data are presented as mean (sd) and 95% confidence interval for the difference between the groups unless otherwise stated

  • FEV1: forced expiratory volume in one second

  • % pred: % predicted

  • MEF50: maximum expiratory flow at 50% of forced vital capacity

  • MEF25: maximum expiratory flow at 25% of forced vital capacity

  • RV: residual volume

  • TLC: total lung capacity

  • MR: mixing ratio

  • LCI: lung clearance index

  • #: MEF50 and MEF25 results were available for analyses in 20 CF patients and 26 control subjects

  • : RV/TLC results were available for analyses in 22 CF patients and 27 control subjects

  • *: p<0.05

  • ***: p<0.001