Distribution of diagnoses among patients receiving long-term oxygen therapy in different studies
| Miyamoto 169 | Waterhouse 170#,¶ | Chailleux 171 | Neri 172# | |
| Diagnosis | ||||
| COPD | 13380 (41.0) | 285 (60.0) | 14349 (54.8) | 1041 (69.2) |
| Interstitial lung disease | 5272 (16.2) | 55 (11.5) | 3417 (13.1) | 169 (11.2) |
| Fibrosis post-TB | 8095 (24.8) | 10 (2.1) | 4147 (15.9) | 142 (9.4) |
| Bronchiectasis | 1217 (3.7) | 13 (3.5) | 1556 (5.9) | 89 (5.9) |
| Others (cancer, neuromuscolar, PH, not classified) | 4657 (14.3) | 150 (31.5) | 2671 (10.2) | 207 (13.8) |
| Total patients | 32621 | 477 | 26140 | 1504 |
Data are presented as n (%) or n. COPD: chronic obstructive pulmonary disease; TB: tuberculosis; PH: pulmonary hypertension. #: total number of diagnoses is greater than the total number of patients because it was possible to fill in more than one category (e.g. COPD and bronchiectasis); ¶: self reported. Studies are indicated as first author [Ref.].