Table 4 Clinical characteristics
Characteristics | Visit 1 |
|---|---|
(N = 334) | |
COPD diagnosis (years), mean (SD) | 7.4 (6.6) |
Chronic bronchitis, n (%) | 90 (26.9) |
FEV1% predicted (%), mean (SD) | 51 (18.9) |
COPD GOLD spirometric classification, n (%)a,b | |
At risk | 18 (5.4) |
GOLD I (FEV1 ≥ 80% predicted) | 19 (5.7) |
GOLD II (50% ≤ FEV1 < 80% predicted) | 134 (40.1) |
GOLD III (30% ≤ FEV1 < 50% predicted) | 114 (34.1) |
GOLD IV (FEV1 < 30%) | 48 (14.4) |