Mortality causes in the study groups
| COPD with emphysema | COPD without emphysema | Asthma with emphysema | Asthma without emphysema | Other RD with emphysema | Other RD without emphysema | p Value | |
|---|---|---|---|---|---|---|---|
| Primary respiratory causes | 34 (35.7%) | 5 (62.5%) | 6 (37.5%) | 2 (40%) | 15 (51.7%) | 7 (33.3%) | 0.020 |
| Lung cancer | 22 (23.1%) | 0 | 1 (6.3%) | 0 | 3 (10.3%) | 2 (9.5%) | |
| Other malignant diseases | 10 (10.5%) | 0 | 1 (6.3%) | 0 | 1 (3.4%) | 0 | |
| Respiratory infectious diseases | 6 (6.3%) | 1 (12.5%) | 3 (18.7%) | 0 | 2 (6.9%) | 7 (33.3%) | |
| Other causes/unknown | 23 (24.2%) | 2 (25.0%) | 5 (31.2%) | 3 (60%) | 8 (27.6%) | 5 (23.8%) | |
| Total number | 95 | 8 | 16 | 5 | 29 | 21 |
COPD, chronic obstructive pulmonary disease; RD, respiratory diseases.