Table 1.

Patient and transplant center characteristics

Patient characteristics at transplant (n=23,631)	Age, mean (range)	53 (18–83)
	Gender	68% male
	MELD, mean (range)	21 (6–40)
	Received priority exception	30%
	Prior liver transplant	8%
	Hepatitis C	38%
	Ascites	None: 21% Mild: 52% Severe: 27%
	Encephalopathy	None: 32% Mild: 56% Severe: 12%
Transplant center characteristics (n=105)	Liver transplants performed per year, mean (range)	88 (3–199)
	Mean MELD at transplant	Range: 12–31 IQR: 20–23
	Sole center within OPO	21/105 (20%)
	Proportion of transplants with MELD exceptions	Range: 12%–51% IQR: 22%–37%

MELD = Model for End-stage Liver Disease (based upon laboratory score, not including assigned priority exception scores), IQR = inter-quartile range, OPO = organ procurement organization