Table 1.

Characteristics of liver transplant candidates before propensity score matching by transplant type (UNOS data between 2003 and 2013 in the USA)

	N	LTA	SLK	P value
N = 35,947		34,337	1610
Age (yr)a	35,947	52.6 ± 10	54.3 ± 9.6	<0.001
Gender (female, %)a	35,947	33.9	34.1	0.84
Race (AA, %)a	35,947	8.9	15.3	<0.001
Recipient DM (%)a	35,947	23.5	37	<0.001
Liver disease (%)a	35,947			<0.001
HCV infection		27.8	28.6
ETOH and NASH		23.6	23.4
Cholestatic		10.9	7
Others		37.6	40.1
BMIa	35,919	28.3 ± 5.8	27.4 ± 5.8	<0.001
Scr (mg/dl) at transplant (if not on dialysis)a	34,403	1.5 ± 1	3 ± 1.2	<0.001
eGFR at transplant (ml/min per 1.73 m2)b	34,403	62.9 ± 32.5	26.9 ± 17.2	<0.001
INR at transplanta	35,947	2 ± 1.2	1.9 ± 0.9	<0.001
Total bilirubin (mg/dl) at transplanta	34,258	10.7 ± 12	12.4 ± 14.5	<0.001
On dialysis at transplant (%)	35,947	8.6	50	<0.001
MELD at transplant	35,944	24.2 ± 9.2	30.9 ± 8.4	<0.001
Liver DRIa	30,982	1.4 ± 0.4	1.2 ± 0.3	<0.001
Median time to transplant (25th and 75th percentiles), moa	35,946	1.9 (0.4, 6.8)	1.3 (0.4, 5.2)	0.001

± Denotes 1 SD.

AA, African American; BMI, body mass index; DM, diabetes; DRI, donor risk index; eGFR, estimated glomerular filtration rate; ETOH and NASH, alcohol and nonalcoholic steatohepatitis; HCV, hepatitis C virus; INR, international normalized ratio; LTA, liver transplant alone; MDRD, Modification of Diet in Renal Disease Study; MELD, model for end-stage liver disease; N, sample size; Scr, serum creatinine; SLK, simultaneous liver-kidney transplantation; UNOS, United Network for Organ Sharing.

^aThe variables used in the propensity score matching.

^bThe MDRD 4-variable equation to eGFR, calculated for the recipient who was not on dialysis.