Table 3 Factors associated with disease progression of nontuberculous mycobacterial lung disease

Age, by each year

0.97 (0.96–0.99) ^*

0.97 (0.96–0.99) ^*

Sex, female

1.38 (0.96–2.00)

–

Body mass index, by 1 kg/m²

0.89 (0.83–0.95) ^*

0.94 (0.87–1.01)

 Never smoker

Reference

–

 Former smoker

0.72 (0.47–1.18)

–

 Current smoker

1.82 (0.80–4.15)

–

Haemoglobin, by 1 g/dL

0.83 (0.73–0.95) ^*

0.89 (0.75–1.06)

Platelet, by 1000/μL

1.00 (1.00–1.01) ^*

1.00 (1.00–1.00)

Total protein, by 1 g/dL

1.88 (1.22–2.89) ^*

1.57 (0.97–2.52)

Total bilirubin, by 1 mg/dL

0.40 (0.18–0.85) ^*

0.42 (0.17–1.04)

SGRQ score, by each score

1.01 (1.00–1.02)

–

FEV₁, by 1 L

1.00 (1.00–1.00)

–

FVC, by 1 L

1.00 (1.00–1.00)

–

DLCO, by 1%

0.99 (0.98–1.00) ^*

0.99 (0.98–1.01)

 Nodular bronchiectatic form

Reference

Reference

 Upper lobe cavitary form

3.69 (2.30–5.94) ^*

3.16 (1.78–5.62) ^*

 NTM culture on two sputum specimens

Reference

Reference

 NTM culture on bronchoscopic specimen

0.93 (0.59–1.48)

0.82 (0.48–1.38)