Demographics of the patients involved in the validation study
| Characteristic | No of patients (%) |
| Age (years) | |
| Median, mean (range) | 49.5, 52 (19–90) |
| Sex | |
| Male | 62 (50%) |
| Female | 62 (50%) |
| Primary respiratory diagnosis | |
| Asthma | 21 (16.9) |
| Bronchiectasis | 11 (9.0) |
| CF | 34 (27.4) |
| COPD | 11 (9.0) |
| ILD | 29 (23.4) |
| Pulm HTN | 2 (1.6) |
| Sleep disorder | 11 (9.0) |
| Transplant | 5 (4.0) |
| Total | 124 |
CF, cystic fibrosis; COPD, chronic obstructive pulmonary disease; ILD, interstitial lung disease; Pulm HTN, pulmonary hypertension.