Table 4

Regression coefficients, standard errors, p values, and adjusted r² for the multiple regression models of determinants of arterial gas tension, saturation, and pH in 142 cirrhotic patients

	Variable	Scoring	Regression coefficient	SE	p Value	Adjusted r² for model	p Value for model
Po ₂	Constant		13.50			0.20	<0.0001
	Pco ₂	kPa	−0.92	0.22	<0.0001
	ICG clearance	ml/min	3.18	1.02	<0.005
	SVR	dyn/s/cm⁵	0.07	0.02	<0.005
So ₂	Constant		97.64			0.06	<0.005
	Heart rate	per min	−0.02	0.01	<0.005
Pco ₂	Constant		7.50			0.29	<0.0001
	Po ₂	kPa	−0.20	0.03	<0.0001
	Child class	Score	−0.09	0.02	<0.0001
pH	Constant		7.59			0.46	<0.0001
	Po ₂	kPa	−0.011	0.002	<0.0001
	Child class	Score	0.006	0.001	<0.0001
	Pco ₂	kPa	−0.019	0.005	<0.0005

Po ₂, arterial O₂ tension; So ₂, arterial O₂ saturation; Pco ₂, CO₂ arterial tension; SVR, systemic vascular resistance; ICG, indocyanine green.