Fig. 2

Median length of stays and costs with interquartile range in the whole PMSI population and the matched populations for each subgroup. A length of stay in days, median with interquartile range. B total hospital cost of stay in euros, median with interquartile range. p < 0.0001 for all comparisons between AKI and no-AKI stays in the matched populations, Wilcoxon tests CVEC  Cardiovascular surgery with extracorporeal circulation, MOV  Major open visceral surgery