Table 1.

Exclusion criteria

Type of exclusion	Exclusion
Demographic exclusion	Age < 18 years
	Height < 130 cm and > 200 cm
	Renal Transplant at admission
Staging exclusion	Less than 24 h of data
	Oliguria (no Anuria) at start of data
Imminence Exclusion	Death after less than 48 h of AKI stage 3
	RRT after less than 24 h of AKI stage 3
Ambiguity exclusion (subsequent events)	Primary: 1. AKI stage 3 for less than 72 h 2. No measurement till 72nd hour 3. Discharge
	Death: 1. AKI stage 3 for less than 48 h 2. No measurement till 48th hour 3. Death
	RRT 1. AKI stage 3 for less than 24 h 2. No measurement till 24th hour 3. RRT administration

Legend: n-th hour is meant from the first hour of the persistent event