Table 1.

Patient characteristics.

	COPD group C n = 48 (12.8%)	COPD group D n = 325 (87.1%)	p
Female sex	23 (47.9%)	185 (56.9%)	0.24
Age	72.0 (8.19)	71.1 (7.80)	0.21
Current smoking	8 (16.7%)	53 (16.3%)	0.95
Cumulative exposure (pack years)	33.7 (28.7)	34.3 (16.7)	0.03
BMI
<22	15 (31.3%)	99 (30.5%)	0.60
≥22, <30	29 (60.4%)	182 (56.0%)
≥30	4 (8.3%)	44 (13.5%)
Number of exacerbations in the previous year	0.9 (1.2)	1.9 (2.6)	0.002
Cardiovascular disease	30 (62.5%)	193 (59.9%)	0.74
Diabetes	3 (6.3%)	37 (11.5%)	0.28
Renal impairment	2 (4.2%)	12 (3.8%)	0.89
Musculoskeletal disease	9 (18.8%)	81 (25.5%)	0.31
Osteoporosis	9 (19.1%)	94 (31.3%)	0.09
Depression	4 (8.3%)	58 (81.1%)	0.09

Patient characteristics distributed over severity group (GOLD 2014).

Data presented as number (%) or mean (standard deviation).