Table IIIA.

Stepwise Cox Regression Analysis of Predictors of 28 Day Survival^*

Variable	Parameter Estimate (± standard error)	HR (95% CI)	p value
Admission parameters
ABIC 9 category	1.37 (± 0.37)	3.94 (1.90 – 8.17)	< 0.001
Hyperammonemia†	1.42 (± 0.56)	3.92 (1.60 – 13.41)	0.012
Admission & peak parameters
Peak MELD 31 category	3.74 (± 0.67)	42.03 (11.30 – 156.40)	< 0.001
INRdf category	1.13 (± 0.50)	3.10 (1.57 – 8.33)	0.024
Admission bilirubin	−0.065(± 0.023)	0.94 (0.90 – 0.98)	0.005

^*Included all parameters with p < 0.05 on univariate analysis except INR (collinearity)

^†Within 2 days of admission