Table 1

Participant characteristics in the study

VariableProne (n=10)Supine (n=10)P value
Basic demographics
Male—n (%)6 (60)6 (60)0.99
Age—median (IQR), mean (SD)59 (55–63), 59 (6)65 (55–71), 64 (10)0.21
Caucasian—n (%)8 (80)8 (80)0.53
Asian—n (%)2 (20)2 (20)0.53
Days since COVID-19 onset—median (IQR), mean (SD)11 (8–13), 12 (8)6 (3–10), 6 (4)0.05
Observations and use of NIV on admission
NIV started on or before ICU admission—n (%)9 (90)7 (70)0.26
Admission SOFA score—median (IQR), mean (SD)2 (2–3.5), 2.7 (1.6)2.5 (2–4.5), 3.3 (1.7)0.35
Admission Apache II—median (IQR), mean (SD)11 (8–18), 13 (5)16 (13–20) 16, (4)0.14
Admission 4C Mortality Score—median (IQR), mean (SD)14 (11–14), 13 (3)19 (15–21), 18 (6)0.02
Requirement of NIV/IMV/ECMO during admission
Required NIV or IMV—n (%)10 (100)8 (80)0.14
Required IMV—n (%)6 (60)5 (50)0.65
Required ECMO—n (%)1 (10)0 (0)0.31
Outcome
28-Day mortality—n (%)1 (10)4 (40)0.12
Length of ICU stay in survivor days—n (%), mean (SD)22 (16–41), 29 (19)7 (4–14), 9 (7)0.01
  • ECMO, extracorporeal membrane oxygenation; ICU, intensive care unit; IMV, invasive mechanical ventilation; NIV, non-invasive ventilation.