Table 2 Association between patient characteristics and time to first acute rejection, as analysed by Cox regression and stratified on centre.

Patient characteristic	HR (95% CI)	p Value
Sex		0.04
Male (n = 259)	1
Female (n = 224)	1.35 (1.01–1.79)
Age (per year)	0.99 (0.98–1.01)	0.29
Year of transplantation (per year)	0.96 (0.91–1.03)	0.25
Ethnicity		0.10
Caucasian (n = 449)	1
Black African (n = 19)	0.43 (0.13–1.36)
Asian (n = 15)	0.41 (0.10–1.65)
Diagnosis		0.01
Chronic viral hepatitis (n = 94)	1
Autoimmune related (n = 172)	2.06 (1.25–3.39)
Alcoholic cirrhosis (n = 80)	1.37 (0.77–2.44)
FHF (n = 44)	2.37 (1.29–4.34)
Other (n = 93)	1.79 (1.04–3.09)

Groups with a hazard ratio (HR) of 1 were chosen as the reference categories. 95% CI, 95% confidence interval.

p values were derived from the log likelihood test.

FHF, fulminant hepatic failure.