Baseline recipients’ and donors’ characteristics.

Continuous values are expressed as the mean ± standard error of the mean. LT, liver transplantation; MELD, Model for End-Stage Liver Disease; PBC, primary biliary cirrhosis; ECD, extended criteria donor; DMELD, donor age x recipient MELD.连续型计量资料以均值±标准误（standard error of the mean）表示。肝移植（liver transplantation, LT）；终末期肝病模型（Model for End-Stage Liver Disease, MELD）；原发性胆汁性肝硬化（primary biliary cirrhosis, PBC）；扩展标准供体（extended criteria donor, ECD）；供体年龄×受体MELD（donor age × recipient MELD, DMELD）。