Table 1 Patients characteristics

Age median [IQR]

45.5 [28.5–58.5]

50 [33–63.5]

0.484

Gender (male) n (%)

12 (70.6%)

11 (61.1%)

0.556

Weight (kg)

87.4 (25.4)

87.5 (21.4)

0.989

Height (cm)

167.4 (10.1)

161.6 (6.1)

0.100

Body surface area (kg/m⁻²)

1.95 (0.31)

1.90 (0.26)

0.712

APACHE II median [IQR]^b

27.8 [23–29.8]

31 [24–29.5]

0.120

Pregnancy n (%)

1 (5.9%)

1 (5.6%)

0.493

Comorbidities n (%)

 Diabetes

8 (47.1%)

10 (55.6%)

0.616

 Hypertension

5 (29.1%)

7 (38.9%)

0.725

 Coronary artery disease

1 (5.9%)

1 (5.6%)

0.493

 Heart failure

0 (0%)

1 (5.6%)

0.975

 Bronchial asthma

2 (11.8%)

2 (11.1%)

0.638

 COPD^c

2 (11.8%)

0 (0%)

0.442

 Acute kidney injury

2 (11.8%)

1 (5.6%)

0.975

 Chronic kidney disease

1 (5.9%)

4 (22.2%)

0.371

 Liver disease

0 (0%)

2 (11.1%)

0.493

 Immunocompromised

0 (0%)

1 (5.6%)

0.975

 Preexisting risk factors for ARDS n (%)^d

0 (0%)

0 (0%)

 Bacterial co-infection n (%)

7 (41.2%)

4 (22.2%)

0.401