Table 1.

All data are median (IQR)

Demographics	n = 20
Sex	Male: 16 (80%) Female: 4 (20%)
Age	71.5 (62.3–78.8)
BMI	23.5 (20.9–30)
Current smoker	Yes: 4 (20%) No: 16 (80%)
FEV1 (litres)	1.15 (0.99–1.81)
FEV1 (% predicted)	45 (34–74)
Diffusion capacity (% predicted)	44 (34–57)
6-minute walk test distance (metres) (n = 14)	320 (253–455)
Age-adjusted Charlson Comorbidity Index	5 (4–5)

.