Table 1 Patient characteristics

Male

151 (41.0)

45 (38.1)

0.592

Age, years

72 ± 10

70 ± 10

0.019

Smoking history

0.264

 Current

20 (5.4)

4 (3.4)

 Past

224 (60.9)

76 (64.4)

 Never

114 (31.0)

38 (32.2)

 Unknown

10 (2.7)

0 (0.0)

 Respiratory diseases

110 (29.9)

41 (34.7)

0.361

  Old pulmonary tuberculosis

31 (8.4)

24 (20.3)

0.001

  Emphysema

40 (10.9)

14 (11.9)

0.739

  Interstitial pneumonia

29 (7.9)

6 (5.1)

0.413

  Lung cancer

31 (8.4)

6 (5.1)

0.318

  Asthma

12 (3.3)

6 (5.1)

0.402

  Bronchiectasis

20 (5.4)

5 (4.2)

0.811

  Chronic heart diseases

45 (12.2)

18 (15.3)

0.431

  Diabetes mellitus

40 (10.9)

10 (8.5)

0.492

  Collagen vascular diseases

27 (7.3)

13 (11.0)

0.247

  Malignancy^a

86 (23.4)

27 (22.9)

0.999

  Chronic liver diseases

8 (2.2)

6 (5.1)

0.115

  Neurological diseases

33 (9.0)

12 (10.2)

0.716

  Chronic renal diseases

7 (1.9)

9 (7.6)

0.005

Steroid use

14 (3.8)

7 (6.0)

0.306

Immunosuppressant use^b

19 (5.2)

5 (4.3)

0.811

BMI, kg/m²

19.6 ± 3.4

20.3 ± 3.2

0.090

BT, °C

36.7 ± 0.6

36.7 ± 0.9

0.735

 Lymphocytes,/μL

1400 ± 680

1300 ± 480

0.014

 Hb, g/dL

12.4 ± 1.8

13 ± 1.6

0.001

 Alb, g/dL

3.9 ± 0.6

4.2 ± 0.4

<0.001

 CRP, mg/dL

1.7 ± 3.5

3.7 ± 7.4

<0.001

 Cre, mg/dL

0.79 ± 0.73

0.9 ± 0.99

0.206

Diagnosis methods

<0.001

 Sputum

263 (71.5)

115 (97.5)

 Bronchoscopy

105 (28.5)

3 (2.5)

 Smear positive

64 (17.4)

38 (32.2)

0.001

 Culture ≥2+

74 (20.1)

NE

 Macrolide resistant

0 (0.0)

0 (0.0)

NE

Radiological findings

0.337

 NB

298 (81.0)

101 (85.6)

 FC

41 (11.1)

14 (11.9)

 FC/NB

6 (1.6)

0 (0.0)

 Other^c

35 (9.5)

3 (2.5)

Deaths

75 (20.5)

20 (16.9)

0.505

Causes of death

0.864

 MAC-specific death

29 (38.7)

9 (45.0)

 Malignancy

20 (26.7)

4 (20.0)

 Other

20 (26.7)

5 (25.0)

 Unknown

6 (0.1)

1 (5.0)