Baseline characteristics and SARS-CoV-2 severity
| Respiratory limitation n=28 (54.9%) | O2 delivery/utilisation impairment or normal n=8 (15.7%) | Dysfunctional breathing n=15 (29.4%) | P value | |
| Age, median (25th–75th) | 67 (61–74) | 58 (44–66) | 54 (43–65) | 0.047 |
| Women, n (%) | 5 (17.9) | 5 (62.5) | 7 (46.7) | 0.026 |
| BMI, median (25th–75th) | 28.6 (25.5–31.2) | 28.2 (26.0–30.8) | 26.3 (24.9–32.2) | 0.977 |
| Comorbidities | ||||
| Cardiovascular disease, n (%) | 10 (35.7) | 1 (12.5) | 1 (6.7) | 0.073 |
| Diabetes, n (%) | 9 (32.1) | 1 (12.5) | 2 (13.3) | 0.278 |
| Hypertension, n (%) | 15 (53.6) | 2 (25.0) | 2 (13.3) | 0.025 |
| Obesity, n (%) | 10 (35.7) | 2 (25.0) | 6 (40.0) | 0.772 |
| Chronic lung disease, n (%) | 4 (14.3) | 0 | 3 (20.0) | 0.411 |
| Never smoker, n (%) | 7 (25.9) | 6 (75.0) | 7 (46.7) | 0.151 |
| SARS-CoV-2 severity | ||||
| Hospitalised, n (%) | 27 (96.4) | 3 (37.5) | 6 (40.0) | <0.001 |
| Intensive care unit admitted, n (%) | 18 (64.3) | 2 (25.0) | 2 (13.3) | 0.003 |
| WHO severity classification | ||||
| Mild/moderate, n (%) | 3 (10.7) | 6 (75.0) | 10 (66,7) | <0.001 |
| Severe/critical, n (%) | 25 (89.3) | 2 (25.0) | 5 (33.3) |
BMI, body mass index.