Table 1 Baseline characteristics, patients and lung function parameters

Age (mean), (range)

68.0(22.4-91.7)

 ≤69.99Years

n=400(56%)

 ≥70.00Years

n=310(44%)

Sex (no of patients)

 Female

n=330(52%)

 Male

n=303(48%)

Lung function parameters

DLCO (ml/min/kPA), mean (range)

5.89(1.58 – 13.87)

 ≥6.53

n=236(33%)

 4.71 – 6.52

n=238(34%)

 ≤4.70

n=236(33%)

FEV ₁ (litres), mean (range

2.13(0.48 – 5.29)

 ≤1.68

n=229(32%)

 1.69 – 2.38

n=238(34%)

 ≥2.39

n=243(34%)

RV (litres), mean (range)

2.26(0.81 – 4.50)

 ≤1.90

n=241(34%)

 1.91 – 2.43

n=232(33%)

 ≥2.44

n=237(33%)