Statistical analysis
death, SD
REGRESSION
Categorical variables are presented as numbers and percentages, and comparisons between groups were performed with the chi-square or Fisher exact test as appropriate. The Shapiro–Wilk test was performed to assess data distribution; continuous variables are summarized as the means ± standard deviations (SD) if the data were normally distributed or medians and interquartile ranges (25–75th) if the data were nonnormally distributed and were compared using Student’s t test or the Mann–Whitney U test, respectively. For variables measured at multiple time points, repeated measures analysis of variance tests were used for comparisons between groups. Time to renal recovery and time to death were both plotted on Kaplan–Meier curves, and the groups were compared with the log-rank test. A multiple regression analysis was performed with the enter method, and all the baseline variables with a p value ≤0.20 were entered into the model in bivariate analysis. All tests were two-tailed, and results with a p value less than 0.05 were considered significant. Statistical analysis was performed, and graphics were generated with MedCalc Statistical Software (Ostend, Belgium. Ver 19.1.3) and GraphPad Prism (California, USA. Ver 9.2.0), respectively.