From: Contribution of small airway inflammation to the development of COPD
Characteristics | COPD | Emphysema | Chronic Bronchitis | Smoking | Controls |
---|---|---|---|---|---|
N = 217 | N = 213 | N = 212 | N = 210 | N = 210 | |
Mean age (SD), years | 61.7 (7.6) | 60.8 (10.0) | 60.4 (11.4) | 58.8 (15.8) | 59.8 (14.8) |
Gender, Male (%) Mean height (SD), cm Mean weight (SD), kg BMI (SD) | 174 (80.2) 166.9 (7.0) 65.9 (9.4) 23.6 (3.1) | 172 (80.7) 168.6 (7.3) 67.5 (10.5) 23.7 (3.3) | 166 (78.3) 166.2 (8.4) 66.7 (12.9) 24.1 (3.8) | 171 (81.4) 171.0 (6.5) 71.4 (13.3) 24.4 (4.5) | 166 (79) 164.0 (8.4) 66.2 (11.8) 23.1 (3.6) |
Pulmonary function test | Â | Â | Â | Â | Â |
 Mean FVC (SD), L  Mean FVC (SD), % predicted  Mean FEV1 (SD), L  Mean FEV1 (SD), % predicted  Mean FEV1/FVC (SD), ratio  Mean FEV1/FVC (SD), % predicted  Mean IC (SD), L  Mean IC (SD), % predicted | 2.9 (0.8) 83.1 (19.1) 1.7 (0.6) 61.7 (20.2) 56.3 (11.1) 72.7 (14.1) 2.1 (0.6) 79.3 (19.1) | 3.6 (0.9) 96.5 (15.7) 2.8 (0.7) 93.3 (14.5) 76.5 (5.7) 97.5 (6.9) 2.4 (0.6) 88.3 (19.2) | 3.5 (0.9) 96.3 (17.9) 2.8 (0.7) 96.7 (15.9) 78.0 (6.8) 98.6 (8.0) 2.4 (0.7) 91.9 (17.5) | 4.2 (0.9) 99.4 (14.4) 3.3 (0.8) 97.5 (14.3) 80.0 (6.1) 99.5 (6.7) 2.7 (0.7) 92.4 (14.0) | 3.6 (0.9) 102.4 (13.4) 2.9 (0.8) 102.5 (12.6) 81.8 (8.8) 99.2 (9.4) 2.3 (0.6) 93.7 (18.2) |
 Mean FEF25 (SD), % predicted | 34.3 (21.3) | 85.6 (21.2) | 87.5 (21.4) | 94.9 (22.8) | 98.3 (19.5) |
 Mean FEF50 (SD), % predicted | 26.8 (14.9) | 71.9 (22.6) | 76.2 (28.2) | 84.2 (22.8) | 86.9 (22.1) |
 Mean FEF75 (SD), % predicted | 30.2 (14.5) | 65.4 (26.7) | 69.7 (28.4) | 74.9 (27.0) | 80.0 (28.1) |
GOLD grade, n (%) | Â | Â | Â | Â | Â |
 GOLD 1 (FEV1% predicted > 80) | 27 (12.4) | - | - | - | - |
 GOLD 2 (50 < FEV1% predicted > 79) | 116 (53.5) | - | - | - | - |
 GOLD 3 (30 < FEV1% predicted > 49) | 56 (25.8) | - | - | - | - |
 GOLD 4 (FEV1% predicted < 30) | 18 (8.3) | - | - | - | - |