Spss ver 19.0 statistical software

The OLT recipients were divided into two groups: HCC recurrence cases and controls of non-recurrence. Data were analyzed using SPSS ver.19.0 statistical software (SPSS Inc., IL, USA). The Wilcoxon signed-rank test was used to evaluate the descriptive variables which expressed as the median (range) as well as using the Pearson’s χ2 test or Fisher’s exact to compare the Categorical variables. The allele and genotype frequencies of C7 polymorphisms, both the donor and recipient, were calculated through SHEsis Online Version (http://analysis.bio-x.cn/myAnalysis.php) and Hardy–Weinberg equilibrium test [29 (link)]. Odds ratio and 95% confidence interval (CI) were tested using the logistic regression analysis. Kaplan–Meier survival curve analysis was performed to estimate the Recurrence-free survival (RFS) and overall survival (OS) and then adjusted by log-rank test. The independent factors associating with RFS and OS were further investigated by the multivariate Cox’s proportional hazards model following the univariate analysis. The P value < 0.05 was considered statistically significant.