Before switching

After switching

p-value

mMRC

1.16 ± 0.98

1.06 ± 0.79

0.083

CAT

9.9 ± 8.1

9.8 ± 7.9

0.940

FVC, L

3.22 ± 0.75

3.23 ± 0.73

0.885

FEV1, L

1.87 ± 0.60

1.89 ± 0.64

0.352

IC, L

2.15 ± 0.58

2.12 ± 0.56

0.517

R5, cmH2O/L/s

3.29 ± 1.34

3.00 ± 1.10

0.026

R20, cmH2O/L/s

2.48 ± 0.90

2.29 ± 0.72

0.045

R5 - R20, cmH2O/L/s

0.81 ± 0.50

0.71 ± 0.46

0.030

X5, cmH2O/L/s

−1.01 ± 1.11

−0.84 ± 0.91

0.058

ΔX5, cmH2O/L/s

0.60 ± 1.47

0.36 ± 0.98

0.072

Fres, Hz

10.86 ± 4.67

10.29 ± 4.71

0.100

ALX, cmH2O/L/s x Hz

6.67 ± 10.02

5.24 ± 7.77

0.096