Shunting branch of portal vein and stent position predict survival after transjugular intrahepatic portosystemic shunt

Table 2 Results from the univariate analyses

Variable	Hepatic encephalopathy			Shunt dysfunction			Survival
	HR	95%CI	P value	HR	95%CI	P value	HR	95%CI	P value
Age (yr)	1.03	1.01-1.04	< 0.001	0.99	0.97-1.01	NS	1.01	0.99-1.03	NS
Gender (male/female)	1.04	0.72-1.50	NS	1.62	1.07-2.45	0.023	1.41	0.92-2.16	NS
TIPS procedure (elective/emergency)	1.37	0.88-2.13	NS	0.66	0.38-1.14	NS	1.57	1.02-2.41	0.041
Ascites (yes/no)	1.55	1.04-2.30	0.031	0.90	0.62-1.33	NS	2.22	1.38-3.57	0.001
Previous splenectomy (yes/no)	0.97	0.61-1.54	NS	1.65	1.09-2.50	0.018	0.61	0.36-1.02	NS
Platelet count (109/L)	1.00	0.99-1.01	NS	1.00	0.99-1.01	NS	0.99	0.99-1.00	0.021
Albumin (g/L)	0.96	0.93-0.99	0.022	0.98	0.95-1.02	NS	0.96	0.92-0.99	0.035
Total bilirubin (μmol/L)	1.00	0.99-1.01	NS	1.00	0.99-1.01	NS	1.01	1.00-1.02	0.002
INR	2.09	1.20-3.64	0.009	0.82	0.41-1.63	NS	3.12	1.86-5.23	< 0.001
Child-Pugh score	1.17	1.06-1.29	0.003	1.01	0.90-1.13	NS	1.29	1.15-1.44	< 0.001
MELD score	1.05	1.01-1.11	0.032	0.97	0.91-1.03	NS	1.09	1.04-1.14	< 0.001
Reduction ratio of PSG (%)	1.02	1.01-1.03	0.004	0.99	0.98-1.01	NS	1.01	0.99-1.02	NS
Shunting branch of the PV (right /left)	1.75	1.22-2.52	0.003	0.81	0.53-1.23	NS	2.10	1.43-3.07	< 0.001
Initial stent position (sub-optimal/optimal)	0.75	0.49-1.15	NS	2.24	1.54-3.25	< 0.001	1.88	1.44-2.47	< 0.001
HE within 6 mo (yes/no)	-	-	-	-	-	-	1.60	1.07-2.38	0.021
Shunt dysfunction within 6 mo (yes/no)	-	-	-	-	-	-	1.87	1.15-3.04	0.011

HE: Hepatic encephalopathy; PSG: Portosystemic pressure gradient; INR: International normalized ratio; MELD: Model for end-stage liver diseases; PV: Portal vein; NS: Non-significant; TIPS: Transjugular intrahepatic portosystemic shunt.