Statistical analysis
Continuous data are presented as mean ± standard deviation for
parametric data and median (interquartile range, IQR) for non-parametric
data. Categorical data are presented as number (percentage). Student’s t
test, analysis of variance (ANOVA), and Mann-Whitney U test were
utilized for pairwise comparison of parametric and non-parametric data,
as indicated. Risk adjusted post-OHT mortality was evaluated using
multivariable Cox Frailty regression with random effects and transplant
center as the nested variable. Statistical analyses were performed using
the SAS version 9.4 software package (SAS Institute Inc, Cary, NC).