Reduction of portosystemic gradient during transjugular intrahepatic portosystemic shunt achieves good outcome and reduces complications

Table 4 Hepatic encephalopathy occurrence in the four groups

Time	Group	HE occurrence		Occurrence rate (%)	χ2	Pvalue
		Yes	No
1 mo	A	43	436	8.97	6.463	0.027
	B	67	345	16.26
	C	27	190	12.44	14.673	0.014
	D	41	131	23.83
3 mo	A	45	434	9.39	5.368	0.023
	B	79	333	19.17
	C	39	178	17.97	17.478	0.009
	D	83	89	48.25
6 mo	A	39	440	8.14	6.473	0.017
	B	72	340	17.47
	C	31	186	14.28	13.957	0.011
	D	74	98	43.02
1 year	A	36	443	7.51	4.538	0.027
	B	61	351	14.8
	C	29	188	13.36	14.576	0.014
	D	69	103	40.11
2 year	A	34	445	7.09	5.452	0.026
	B	49	363	11.89
	C	23	194	10.59	11.476	0.013
	D	54	118	31.39
3 year	A	29	443	6.14	5.467	0.028
	B	43	369	10.43
	C	17	155	9.88	8.473	0.017
	D	42	130	24.41
Total HE rate	A	46	433	9.6	7.932	0.016
	B	67	158	16.26
	C	47	170	21.65	13.637	0.007
	D	69	103	40.11

There were significant differences in incidence of hepatic encephalopathy in group A compared with groups B–D at 1, 3, 6 and 9 mo, and 1, 2 and 3 years (P < 0.05). HE: Hepatic encephalopathy.