Table 1.

Baseline characteristics for hypoxemic patients only in the MIMIC III and the Rabin COVID-19 cohorts.

Characteristic	MIMIC III	Rabin medical center
Total number of hypoxemic patients	11,816	1061
Male sex	6589 (55.8%)	626 (59.0%)
Age- years	67.4 (± 16.2)	67.7 (± 16.5)
Weight- kg	82.7 (± 24.1)	79.3 (± 20.8)
Height- cm	168.8 (± 12.5)	166.5 (± 9.5)
BMI- kg/m2	29.8 (± 11.4)	28.7 (± 8.6)
In the first 24 h
Heart rate- beats per minute	87.0 (± 17.9)	81.4 (± 16.7)
Mean blood pressure- mmHg	76.6 (± 14.8)	82.5 (± 17.5)
Platelets- 103/microliter	204.7 (± 111.7)	218.9 (± 100.5)
Creatinine- mg/dl	1.5 (± 1.5)	1.4 (± 1.4)
Bilirubin- mg/dl	2.1 (± 4.5)	0.6 (± 1.6)
White Blood cells- 103/microliter	13.3 (± 13.0)	7.4 (± 4.3)
PaO2/FiO2	297.2 (± 163.6)	148.8 (± 75.8)
SpO2/FiO2	187.7 (± 147.2)	170.7 (± 57.5)
Respiratory support during stay
Oxygen therapy (other than high flow)	10,356 (87.6%)	308 (29.0%)*
High flow oxygen therapy	1031 (8.7%)	198 (18.7%)*
Non-invasive ventilation (CPAP or BiPAP)	854 (7.2%)	16 (1.6%)*
Invasive mechanical ventilation	6281 (53.2%)	160 (15.1%)*
Outcome measures
Hospital length of stay- days	9.4 ($\pm 8.3)$	15.1 ($\pm 11.6)$
Hospital mortality	2289 (19.3%)	211 (20.0%)
Length of ventilation (only patients on IMV)- hours	41.1 ($\pm 46.3)$	176 ($\pm 230.7)$
SOFA	8.18 ($\pm 2.51)$	N/A

BMI body mass index, CPAP continuous positive airway pressure, BiPAP bilevel positive airway pressure, IMV invasive mechanical ventilation, N/A not available, SOFA sequential organ failure assessment.

*Recorded means of noninvasive respiratory support in Rabin are very low. This could only be attributed to underreporting of the modalities used.