Statistical Analysis
Statistical analyses were performed using the SPSS software version 16.
The variables were investigated using (histograms, probability plots)
and analytical methods (Kolmogorov-Smirnov/Shapiro-Wilk’s test) to
determine whether or not they were normally distributed. Descriptive
analyses were presented using medians and interquartile range (IQR) for
the non-normally distributed and ordinal variables. The proportions of
patients with ATG use, preemptive transplantation, and BKVN were grouped
by types of DJS using cross-tabulations. The Chi-square test or Fisher’s
exact test, where appropriate, were used to compare these proportions in
different groups. Blood creatinine measurements were not normally
distributed; nonparametric tests were conducted to compare these
parameters. The Mann-Whitney U test was used to compare the
relationship between blood creatinine levels and the use of the
ARD-DJS.