Table 3 Multivariable analysis of overall survival (OS) by Cox regression (n = 229)

Diagnostic delay (years)*—continuous

1.61

1.09–2.38

Body mass index (BMI; kg/m²)—continuous

0.86

0.73–1.00

Age (years)—continuous

1.07

1.02–1.12

Active smoking at time of inclusion into registry

No

1.00

–

Yes

11.54

2.02–65.83

Forced expiratory volume in 1 s (FEV₁) in % of the expected value

> 50

1.00

–

≤ 50

3.23

0.68–15.36

Long-term oxygen therapy at inclusion into registry

No

1.00

–

Yes

2.33

0.83–6.50