Patient’s characteristics the day before the flight
| Characteristics | All patients (n=22) |
| Age, median (IQR) | 69 (63–73) |
| Male gender, n (%) | 20 (91) |
| BMI, kg/m2, median (IQR) | 29 (26–33) |
| Comorbidities | |
| Charlson score, median (IQR) | 4 (2–4) |
| Diabetes, n (%) | 5 (23) |
| Hypertension, n (%) | 13 (59) |
| Obesity (BMI >30), n (%) | 10 (45) |
| SOFA score, median (IQR) | 3 (3–6) |
| SOFA Respiratory score, median (IQR) | 3 (3–3) |
| SOFA Cardiovascular score, median (IQR) | 0 (0–0) |
| Days since symptoms beginning, median (IQR) | 17 (13–19) |
| Days since ICU admission, median (IQR) | 8 (6–16) |
| Days since mechanical invasive ventilation, median (IQR) | 6 (4–11) |
| Treatments before flight | |
| Tidal volume, mL/kg, median (IQR) | 6.2 (6.0–6.4) |
| PEEP, mm Hg, median (IQR) | 10 (8–12) |
| FiO2, %, median (IQR) | 50 (45–50) |
| Neuromuscular blockade, n (%) | 13 (60) |
| Corticosteroid treatment, n (%) | 23 (100) |
| Pneumonia, n (%) | 9 (41) |
| Prone positioning, n (%) | 17 (74) |
| Number of prone position sessions, median (IQR) | 1 (1–3) |
BMI, body mass index; FiO2, O2 inspired fraction; ICU, intensive care unit; PEEP, positive end-expiratory pressure; SOFA, Sequential Organ Failure Assessment score.