Statistical methods
Categorical data were reported as counts with percentages and analyzed with chi-square or Fisher exact test in univariate analysis, as appropriate. Continuous data were reported as medians with interquartile ranges and analyzed with Wilcoxon rank sum test in univariate analysis. Kaplan–Meier analyses were used to describe time-to-event variables including survival and cumulative incidence of RRT discontinuation. The log-rank test was used to compare the AT II and placebo arms with strata defined by the randomization strata [