Targeted puncture of left branch of intrahepatic portal vein in transjugular intrahepatic portosystemic shunt to reduce hepatic encephalopathy

Table 3 HE occurrence in the two groups

Time	Group	HE occurrence		HE occurrence rate, %	Covert	HE grade			χ2	P value
		Yes	No			II	III	IV
1 mo	A	140	797	14.94	44	78	10	8	4.839	0.028
	B	113	194	36.80	27	56	18	12
3 mo	A	117	820	12.48	34	59	17	7	5.054	0.025
	B	105	202	34.20	26	58	11	10
6 mo	A	94	843	10.03	53	32	6	3	6.560	0.010
	B	99	208	32.24	36	46	9	8
9 mo	A	86	851	9.17	42	31	7	6	5.357	0.021
	B	96	211	31.27	46	37	9	4
12 mo	A	77	860	8.21	34	35	6	3	3.848	0.051
	B	86	221	28.01	28	39	11	8
3 yr	A	62	875	6.61	25	31	6	0	1.204	0.272
	B	22	285	7.16	12	6	4	0
5 yr	A	47	890	5.01	23	24	0	0	0.072	0.562
	B	19	288	6.18	12	5	2	0

There was a significant difference in incidence of hepatic encephalopathy in group A compared with group B at 1, 3, 6, 9 and 12 mo (P < 0.05), whereas at 3 and 5 years, there were no significant differences between the groups (P > 0.05). P = 0.562 by Fisher’s exact test. HE: Hepatic encephalopathy.