Table 1 Demographic and partial clinical data of participants in our study

Sex, M/F, n

80/180

47/97

33/83

0.530

0.467

Age (years), mean ± SD

60.5 ± 13.4

53.9 ± 12.7

68.7 ± 9.1

-10.553

< 0.001

Age>65 years, n (%)

121 (46.5)

36 (25.0)

85 (73.3)

60.180

< 0.001

BMI (kg/m²), mean ± SD

20.3 ± 2.3

21.2 ± 2.1

19.2 ± 2.2

7.384

< 0.001

BMI < 18.5 kg/m², n (%)

61 (23.5)

16 (11.1)

45 (38.8)

27.416

< 0.001

Smoking status, n (%)

11.776

0.003

 Non-smoker

156 (60.0)

83 (57.6)

73 (62.9)

 Current-smoker

32 (12.3)

11 (7.6)

21 (18.1)

 Ex-smoker

72 (27.7)

50 (34.7)

22 (19.0)

 Current-smoker, n (%)

32 (12.3)

11 (7.6)

21 (18.1)

6.519

0.011

Alcohol abuse, n (%)

80 (30.8)

47 (32.6)

33 (28.5)

0.530

0.467

Chronic PA colonization, n (%)

61 (23.5)

10 (6.9)

51 (44.0)

49.035

< 0.001

History of previous respiratory infection, n (%)

170 (65.4)

91 (63.2)

79 (68.1)

0.684

0.434

 Previous pertussis, n (%)

11 (4.2)

7 (4.9)

4 (3.4)

0.064

0.801

 Previous tuberculosis, n (%)

74 (28.5)

38 (26.4)

36 (31.0)

0.681

0.409

 Previous pneumonia, n (%)

59 (22.7)

30 (20.8)

29 (25.0)

0.636

0.425

 Previous measles, n (%)

27 (10.4)

16 (11.1)

11 (9.5)

0.183

0.669

Comorbid conditions

 COPD, n (%)

46 (17.7)

8 (5.6)

38 (32.8)

32.648

< 0.001

 Asthma, n (%)

44 (16.9)

24 (16.7)

20 (17.2)

0.015

0.902

 Chronic sinusitis, n (%)

62 (23.8)

34 (23.6)

28 (24.1)

0.010

0.921

 GERD, n (%)

8 (3.1)

5 (3.5)

3 (2.6)

0.003

0.960

 ABPA, n (%)

14 (5.4)

6 (4.2)

8 (6.9)

0.940

0.332

 Diabetes, n (%)

23 (8.8)

13 (9.0)

10 (8.6)

0.013

0.909

 Hypertension, n (%)

136 (52.3)

76 (52.8)

60 (51.7)

0.029

0.866

 Coronary heart disease, n (%)

80 (30.8)

42 (29.2)

38 (32.8)

0.389

0.533

 Liver disease, n (%)

22 (8.5)

13 (9.0)

9 (7.8)

0.134

0.715

 Kidney disease, n (%)

18 (6.9)

10 (6.9)

8 (6.9)

0

0.988

 Cerebral vascular disease, n (%)

89 (34.2)

46 (31.9)

43 (37.1)

0.749

0.387

 Autoimmune disease, n (%)

36 (13.8)

19 (13.2)

17 (14.7)

0.115

0.735