Table 2 Clinical manifestations of the study population divided by the severity of airflow limitation as well as those who were lost to follow-up

Subject n

83

49

43

84

Symptoms

 Cough

80.41

91.84

90.70

91.30

0.1003

0.0324

 Expectoration

78.35

81.63

86.05

83.70

0.5587

0.3496

 Haemoptysis

37.11

32.65

18.61

26.09

0.0937

0.1036

 Dyspnoea

28.87

36.74

60.47

47.83

0.0018

0.0073

 mMRC dyspnoea scale score

  0

73.20

44.90

27.91

36.96

< 0.0001

< 0.0001

  1

14.43

18.37

27.91

22.83

  2

7.22

20.41

20.93

20.65

  3

3.09

8.16

20.93

14.13

  4

2.06

8.16

2.33

5.43

Number of hospitalizations in the last 2 years

0.41 ± 0.69

0.80 ± 1.37

0.74 ± 1.00

0.77 ± 1.21

0.0473

0.0064

Number of acute exacerbations in the previous 12 months

0.79 ± 0.90

1.39 ± 1.51

1.42 ± 0.95

1.23 ± 1.09

0.0174

0.0008

BSI

 Mild(0–4)

45.36

10.20

4.65

7.61

< 0.0001

< 0.0001

 Moderate(5–8)

26.80

42.86

27.91

35.87

 Severe(≥ 9)

27.84

46.94

67.44

56.52

Infection rate

41.24

55.10

60.47

57.61

0.0697

0.0244

 Pseudomonas aeruginosa

2.06

10.20

44.19

26.09

< 0.0001

< 0.0001

Imaging

3 or more lobes or saccular bronchiectasis

85.08

59.18

86.05

71.74

0.0012

0.0473