Table 1.

Baseline characteristics.

	COPD (n=70)
Age, years	59 ± 9
Male sex	36 (51%)
White race	34 (47%)
Smoking Status Current Former Never	34 (49%) 36 (50%) 2 (3%)
Pack-year history of smoking	36 ± 25
Post-BD FEV1, pct predicted	65 ± 22
Post-BD FVC, pct predicted	84 ± 16
FEV1/FVC	0.59 ± 0.16
MMRC score	1.8 ± 1.2
BCSS score	4.3 ± 2.7
Median [IQR] plasma ST6GAL1	1.93 [1.44-2.48] ng/ml

Data expressed as mean ± S.E.M. or n (%). BD, bronchodilator; FEV1, forced expiratory volume in 1-second; FVC, forced vital capacity; MMRC, modified medical research council; BCSS, breathlessness, cough, and sputum scale.