Statistical analysis
All data were summarized using standard descriptive statistical methods. Prevalence values were reported with corresponding exact binomial 95% confidence intervals (CI). Comparisons of qualitative variables between patient groups were completed using chi-square tests, and comparisons between quantitative variables between patient groups were completed using either t-tests or, in the case of non-normality, Mann-Whitney U tests. The comparison of SBP and DBP indices at diagnosis and 1-month post-diagnosis was completed using paired t-tests. Logistic regression models were used to assess risk factors for the occurrence of AKI, CKD, and HTN. Variables assessed included age at diagnosis, gender, ALL risk category, number of nephrotoxic agents, number of hospitalizations, need for vasopressors, need for radiation, obesity, current steroid use, history of AKI. All analyses were performed using SAS software, version 9.4 (SAS Institute, Cary, NC).