Table 3.
The demographic and spirometric results of groups
| Characteristics | Asthma | ACOS | Chronic bronchitis | Emphysema | UNDO |
|---|---|---|---|---|---|
| Age (years), mean ± SD | 39.1±14.5 | 57.9±10.4 | 59.1±8.3 | 66.2±9.6 | 67.9±6.1 |
| Male/female | 37/21 | 62/8 | 47/14 | 32/0 | 12/2 |
| BMI; mean ± SD | 27.2±5.4 | 28.3±4.9 | 27.5±5 | 24.5±4.2 | 27.5±7.3 |
| Smoking status | |||||
| Nonsmoker, n (%) | 26 (44.8) | 6 (8.6) | 12 (19.7) | 0 | 2 (14.3) |
| Current smoker, n (%) | 29 (50) | 38 (54.3) | 28 (45.9) | 11 (34.4) | 3 (21.4) |
| Ex-smoker, n (%) | 3 (5.2) | 26 (37.1) | 21 (34.4) | 21 (65.6) | 9 (64.3) |
| Baseline spirometry | |||||
| FVC (mL) | |||||
| Mean ± SD | 3,442±1,294 | 2,777±1,047 | 2,719±881 | 2,331±783 | 2,105±989 |
| %Pred ± SD | 83±22.1 | 72±21.3 | 76.2±23.4 | 64.8±19.2 | 63.5±19 |
| FEV1 (mL) | |||||
| Mean ± SD | 2,248±894 | 1,724±690 | 1,765±662 | 1,374±588 | 1,273±685 |
| %Pred ± SD | 64.6±19.0 | 55.7±18 | 61.9±21.7 | 48.5±18.5 | 48.7±18.4 |
| FEV1/FVC | |||||
| %Pred ± SD | 64.7±5.7 | 61.7±6.3 | 64.4±6.1 | 57.5±7.7 | 59.6±7.1 |
Abbreviations: ACOS, Asthma–COPD Overlap Syndrome; UNDO, undifferentiated obstruction; BMI, body mass index; FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; Pred, Predicted.