Survival and prognostic factors in hepatitis B virus-related acute-on-chronic liver failure

Table 3 Results of multivariable Cox regression analysis

Variables	Relative risk ratio	95% CI	Wald value	P value
Age	1.322	0.792-2.208	1.139	0.286
Cirrhosis	1.144	0.648-2.021	0.215	0.643
Antiviral therapy	0.609	0.430-1.067	6.809	0.014
Electrolyte disturbances	2.062	1.282-6.433	6.571	0.010
HE	1.879	1.335-2.646	13.065	< 0.001
SBP	1.295	0.798-2.103	1.095	0.295
HRS	2.084	1.090-3.984	4.928	0.026
PTA	0.940	0.699-1.264	0.168	0.682

HE: Hepatic encephalopathy; SBP: Spontaneous bacterial peritonitis; HRS: Hepatorenal syndrome; PTA: Prothrombin activity.