Table 2 Scores on CAT, mMRC, and original questionnaire survey, and visual analog scale after using each inhaler

14.2 ± 8.5

14.6 ± 9.0

14.1 ± 8.6

0.9454

0.9975

0.9208

1.86 ± 0.95

1.80 ± 1.01

1.89 ± 0.95

0.9359

0.9836

0.8617

0.39 ± 0.84

0.31 ± 0.67

0.28 ± 0.54

0.7473

0.5964

0.9681

0.39 ± 0.62

0.51 ± 0.91

0.27 ± 0.51

0.6027

0.5273

0.1051

0.54 ± 0.69

0.56 ± 0.86

0.46 ± 0.75

0.9742

0.8495

0.7267

0.31 ± 0.60

0.65 ± 0.83

0.23 ± 0.45

0.0059

0.7164

0.0004

0.10 ± 0.45

0.08 ± 0.41

0.10 ± 0.34

0.9764

1

0.9764

0.14 ± 0.35

0.20 ± 0.52

0.08 ± 0.33

0.692

0.692

0.2325

0.06 ± 0.23

0.10 ± 0.34

0.08 ± 0.28

0.6597

0.8309

0.9547

0.20 ± 0.52

0.34 ± 0.70

0.32 ± 0.63

0.3671

0.4436

0.9899

0.59 ± 0.87

0.53 ± 0.84

0.46 ± 0.71

0.8633

0.622

0.9102

0.32 ± 0.63

0.46 ± 0.77

0.30 ± 0.62

0.4303

0.9666

0.2981

0.30 ± 0.54

0.31 ± 0.71

0.28 ± 0.68

0.9908

0.9908

0.9638

1.01 ± 0.62

1.42 ± 0.77

1.21 ± 0.75

0.0024

0.2323

0.1878

1.06 ± 0.63

1.23 ± 0.74

1.14 ± 0.68

0.3082

0.7435

0.7435

1.01 ± 0.73

1.45 ± 1.01

1.64 ± 0.90

0.0103

< 0.0001

0.3821

1.58 ± 0.80

1.80 ± 0.77

1.70 ± 0.74

0.1936

0.5919

0.7277

1.35 ± 0.79

1.70 ± 0.93

1.54 ± 0.73

0.0311

0.3836

0.4416

6.65 ± 2.21

6.09 ± 2.32

6.06 ± 2.10

0.2924

0.2514

0.9954