Effect of portal pressure gradient reduction on outcomes after transjugular intrahepatic portosystemic shunt in portal hypertension patients

Table 1 Univariate and multivariate Cox regression analyses for recurrent variceal bleeding before and after propensity score matching

Characteristics	Before PSM, univariate analyses (n = 815)			Before PSM, multivariate analyses (n = 815)			After PSM, univariate analyses (n = 662)			After PSM, univariate analyses (n = 662)
	HR	95%CI	P	HR	95%CI	P	HR	95%CI	P	HR	95%CI	P
Group B	0.546	0.366-0.815	0.003b	0.623	0.387-1.004	0.052	0.520	0.330-0.818	0.005b	0.520	0.330-0.818	0.005b
Kalium	0.305	0.120-0.774	0.012a	0.305	0.119-0.783	0.014a
Cancer antigen 153	0.691	0.493-0.968	0.032a	0.713	0.500-1.016	0.061
Creatinine	1.952	1.123-3.394	0.018a	1.679	0.943-2.990	0.078
Pre-TIPS inferior vena cava pressure	1.629	1.010-2.628	0.046a	1.556	0.950-2.547	0.079
Pre-TIPS Child-Turcotte-Pugh score	2.513	1.095-5.766	0.030a	1.983	0.841-4.679	0.118
Portal vein diameter	2.487	1.216-5.084	0.013a	1.279	0.548-2.984	0.569
Alkaline phosphatase	0.680	0.460-1.006	0.054
Alanine aminotransferase	0.774	0.563-1.065	0.116

^aP < 0.05.

^bP < 0.01.

HR: hazard ratio; PSM: Propensity score matching; TIPS: Transjugular intrahepatic portosystemic shunt.