
Arithmetic mean (SD) 
Difference A – B
(95% CI) ^{2} 
pvalue ^{3} 

Group A  CF 
Group B – healthy controls 


X5 [kPa/(L/sec)]^{1} 
–0.174 (0.082) 
–0.085 (0.062) 
–0.090 (–0.135, –0.045) 
<0.0001 
FEV1 [L]
% predicted 
2.37 (0.81)
67% 
3.53 (0.74)
94% 
–1.16 (–1.46, –0.86) 
0.0002 
AX [kPa/L]^{1} 
0.835 (1.017) 
0.290 (0.116) 
0.566 (0.069, 1.063) 
0.0044 
FVC [L] 
3.44 (1.00) 
4.36 (0.90) 
–0.91 (–1.34, –0.49) 
0.0157 
RF [Hz]^{1} 
15.8 (5.8) 
12.1 (2.6) 
3.9 (0.8, 7.0) 
0.0385 
FEV1: forced expiratory volume in 1 second; FVC: forced vital capacity; Frequency dependent reactance as indicators of reactive capacitance properties of the lung: (X5, RF, AX)
^{1}1 subject in Group A and 2 subjects in Group B did not have oscillometry results.
^{2}Differences and ratios calculated from ANOVA with adjustment for matching.
^{3}pvalues calculated using nonparametric (Wilcoxon) test.
