Table 4.

Association between AKI diagnosis by different criteria and the risk of development of combined events (dialysis, death and/or prolonged hospitalization) in 321 patients undergoing to cardiac surgery

Model	Variables	AKIN	RIFLE	KDIGO
		HR (95%CI)	HR (95%CI)	HR (95%CI)
1	Univariate analysis	1.99 (1.29- 3.08)	2.15 (1.32 - 3.51)	2.45 (1.57 - 3.82)
2	1 + Age, Sex, Diabetes mellitus	1.62 (1.02 - 2.55)	1.89 (1.15 - 3.14)	2.19 (1.39 - 3.44)
	Type of surgery 1
3	2 + Time of ECC e Low Cardiac	1.41 (0.89 - 2.25)	1.58 (0.93 - 2.67)	1.89 (1.18 - 3.06)
	Output

¹ Patients who underwent myocardial revascularization were used as reference. ECC: Extracorporeal circulation.