Table 2. Linear regression outputs of baseline radiographic assessment of lung edema scores and baseline global lung ultrasound scores.

	RALE score				LUS score
	β	95%CI	p value	Adj. R2	β	95%CI	p value	Adj. R2
Shunt
PaO2/FiO2
Intercept	315	290 - 340	< 0.001	0.05	323	304 - 343	< 0.001	0.12
Score	-3.1	-4.5 - -1.7	< 0.001		-6.7	-8.6 - -4.8	< 0.001
Dead space
Ventilatory ratio
Intercept	1.2	1.1 - 1.3	< 0.001	0.06	1.3	1.2 - 1.4	< 0.001	0.06
Score	0.02	0.01 - 0.02	< 0.001		0.02	0.01 - 0.03	< 0.001
Corrected VE
Intercept	7.3	6.6 - 8.0	< 0.001	0.06	8.0	7.4 - 8.6	< 0.001	0.03
Score	0.1	0.06 - 0.14	< 0.001		0.1	0.05 - 0.16	< 0.001
Mechanics
Compliance
Intercept	43.5	39.2 - 47.8	< 0.001	0.01	43.7	40.1 - 47.2	< 0.001	0.02
Score	-0.28	-0.52 - -0.03	0.027		-0.53	-0.88 - -0.19	0.002
Driving pressure
Intercept	11.0	10.6 - 12.8	< 0.001	0.04	12.1	11.2 - 13.0	< 0.001	0.04
Score	0.12	0.06 - 0.18	< 0.001		0.18	0.09 - 0.26	< 0.001
Mechanical power
Intercept	13.3	11.4 - 15.2	< 0.001	0.12	16.5	14.9 - 18.1	< 0.001	0.05
Score	0.40	0.29 - 0.50	< 0.001		0.35	0.19 - 0.51	< 0.001

RALE - radiographic assessment of lung edema; LUS - lung ultrasound; 95%CI - 95% confidence interval; PaO₂/FiO_{2 -} partial pressure of oxygen to fraction of inspired oxygen ratio; VE - minute volume.