The study by Nakamura et al. [26] The study by Mehrotra et al. [28]
Patient number 289 27,232
Institute Single Multiple
Donor type Living only Living (24%) and deceased (76%)
Observation period 4 years 3 years
AKI identification method RIFLE criteria ICD-9-CM codes
AKI occurrence rate (%) 20.4 11.3
Hazard ratio for graft failure    
aMild AKI 2.28 2.74
bSevere AKI 3.95 7.35
aAKI Risk in the study by Nakamura et al., and AKI without dialysis in the study by Mehrota et al. [28]
bAKI Injury/Failure in the study by Nakamura et al., and AKI with dialysis in the study by Mehrota et al. [28]
Table 1: Summary of the AKI studies during the maintenance phase of kidney transplantation.