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

Table 6 Univariate and multivariate Cox regression analyses for mortality 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	0.491	0.301-0.801	0.004b	0.507	0.309-0.832	0.007b	0.549	0.323-0.933	0.027a	0.550	0.322-0.940	0.029a
C-reactive protein	1.217	1.104-1.342	< 0.001b	1.218	1.103-1.344	< 0.001b	1.213	1.095-1.344	< 0.001b	1.213	1.094-1.345	< 0.001b
Creatinine	2.974	1.687-5.243	< 0.001b	2.652	1.419-4.956	0.002b	2.548	1.375-4.721	0.003b	2.349	1.198-4.606	0.013a
Right hepatic venous wedge pressure	2.514	1.187-5.322	0.016a	1.819	0.845-3.916	0.126	2.194	1.008-4.772	0.048a	1.687	0.759-3.749	0.199
Glutamyl transferase	1.231	0.961-1.577	0.100				1.297	0.999-1.683	0.051
Portal vein diameter	0.642	0.271-1.521	0.314				0.488	0.196-1.214	0.123

^aP < 0.05.

^bP < 0.01.

HR: hazard ratio; PSM: Propensity score matching.