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) | Controls | CF‐controls | |
| Patients n | 29 | 28 | |
| Age yrs | 9.3 (3.9) | 11.5 (3.2) | −4.0–−0.2* |
| FEV1 % pred | 96.1 (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/TLC¶ | 22.7 (5.4) | 22.8 (4.3) | −2.9–2.7 |
| MR | 1.47 (0.28) | 1.19 (0.08) | 0.17–0.39*** |
| LCI | 7.6 (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