Table 1 Baseline characteristics
Variable | COPD (N = 184) | PRISm (N = 72) | Health (N = 45) | Asthma (N = 66) | P-values |
|---|---|---|---|---|---|
Gender (%) |  |  |  |  | < 0.01 |
 Male | 160 (87.0) | 43 (59.7) | 28 (62.2) | 25 (37.9) | |
 Female | 24 (13.0) | 29 (40.3) | 17 (37.8) | 41 (62.1) | |
 BMI | 23.5 ± 3.5 | 23.6 ± 4.0 | 22.9 ± 3.4 | 23.0 ± 3.9 | 0.67 |
 Age | 68.5 ± 8.4 | 61.2 ± 13.6 | 55.5 ± 15.4 | 52.8 ± 13.7 | < 0.01 |
Smoking condition | |||||
 Current smoking (%) | 41(22.3) | 19(26.4) | 9(20) | 8(12.1) | < 0.01 |
 Pack-day | 1.2 | 1.1 | 0.7 | 0.54 | < 0.01 |
 Occupational smoke exposure (%) | 48 (26.1) | 16 (22.2) | 3 (6.7) | 13 (19.7) | 0.035 |
Underlying disease (%) |  |  |  |  | < 0.01 |
 Cardiovascular disease | 62(33.7) | 36(50) | 3(6.7) | 14(21.2) | |
 Digestive disease | 5(2.7) | 4(5.6) | 2(4.4) | 1(1.5) | |
 Others | 36(19.6) | 12(16.7) | 2(4.4) | 17(25.8) | |
Pulmonary functional test | |||||
 FEV1% | 32.4 ± 20.9 | 59.9 ± 9.0 | 94 ± 13.4 | 71.1 ± 24.0 | < 0.01 |
 FEV1/FVC | 49.8 ± 15.6 | 82.7 ± 8.3 | 76.7 ± 6.2 | 68.8 ± 15.9 | < 0.01 |
 IC | 2.11 ± 0.6 | 2.52 ± 6.4 | 2.55 ± 3.2 | 2.4 ± 0.7 | 0.41 |
 MEF50 | 23.9 ± 16.4 | 51.82 ± 17.0 | 90.48 ± 24.2 | 45.6 ± 33.7 | < 0.01 |
 MEF75 | 28.87 ± 18.2 | 82.4 ± 29.7 | 92.4 ± 19.5 | 49.5 ± 30.1 | < 0.01 |