COPD | No COPD | Total | |||
Asthma* | Chronic bronchitis* | Emphysema* | 6 | 1 | 7 |
No emphysema | 15 | 13 | 28 | ||
No chronic bronchitis | Emphysema | 9 | 2 | 11 | |
No emphysema | 23 | 40 | 63 | ||
No asthma | Chronic bronchitis | Emphysema | 6 | 0 | 6 |
No emphysema | 2 | 17 | 19 | ||
No chronic bronchitis | Emphysema | 10 | 8 | 18 | |
No emphysema | 25 | 292 | 317 | ||
Total | 96 | 373 | 469 |
COPD, chronic obstructive pulmonary disease (defined as post-bronchodilator FEV1/FVC <0.7).
*See text for definitions of these phenotypes.