Accurate ultrasonography-based portal pressure assessment in patients with hepatocellular carcinoma

Table 4 Multiple linear regression stepwise method output using ultrasonography Doppler data for correlations with portal pressure gradient

Model	Unstandardized coefficients			Standardized coefficient	T value	P value	95% Confidence Interval
	β		Standard error	β
1 (Constant)	19.432	2.785			8.538	0.000	15.133-21.482
SV (cm3)	-0.212	0.214		-0.265	-1.432	0.654	-0.378-0.431
PVD (cm)	0.322	0.254		0.331	0.085	0.723	0.134-0.564
PVV (cm/s)	-0.323	0.187		-0.353	-1.572	0.157	-0.623-0.113
PBF (mL/min)	0.001	0.056		0.274	1.431	0.197	0.023-0.422
2 (Constant)	19.345	2.634			8.634	0.000	15.268-21.372
PVD (cm)	0.312	0.262		0.232	0.079	0.654	0.211-0.592
PVV (cm/s)	-0.343	0.232		-0.412	-1.548	0.132	-0.451-0.065
PBF (mL/min)	0.001	0.067		0.283
3 (Constant)	19.336	2.543			8.634	0.000	16.235-22.354
PVV (cm/s)	-0.312	0.134		-0.532	-2.645	0.032	-0.454-0.001
PBF (mL/min)	0.001	0.078		0.276	2,143	0.025	0.034-0.462

SV: Spleen volume; PVD: Portal vein diameter; PVV: Portal vein velocity; PBF: Portal vein flow.