Table 1 Baseline patient demographics

Age, years

68 ± 8

57 ± 13

62 ± 12

65 ± 12

Male

246 (75%)

209 (31%)

59 (44%)

185 (54%)

BMI, kg/m²

29 ± 5

28 ± 6

31 ± 6

30 ± 6

Current or past smoking

263 (80%)

335 (50%)

73 (54%)

217 (63%)

 Smoking pack-years

21 (2–37)

0 (0–18)

4 (0–21)

8 (0–28)

Baseline lung function

 FVC, %-predicted

80 ± 18

77 ± 19

75 ± 19

81 ± 20

 DLCO, %-predicted

60 ± 18

63 ± 20

62 ± 19

65 ± 21