Table 2.

Best multivariable risk predictors that determined acute kidney injury

Risk factor	OR	95%CI	p-value	Coefficient	Score
Age < 65	Ref				0
Age over 65	1.611	1.219–2.128	0.001	0.477	1
SOFA non-renal at ICU admission
0–1	Ref				0
2–5	2.690	1.871–3.868	< 0.001	0.990	2.5
≥ 6	7.393	4.899–11.157	< 0.001	2.001	5.0
No sepsis at ICU admission	Ref				0
Sepsis at ICU admission	3.397	2.426–4.757	< 0.001	1.223	3.0
Elective surgery	Ref				0
Emergency surgery	2.457	1.813–3.332	< 0.001	0.899	2.5
Perioperative blood loss
< 1000 mL	Ref				0
≥ 1000–2500 mL	1.708	1.175–2.482	0.005	0.535	1.5
> 2500 mL	2.839	1.909–4.220	< 0.001	1.043	2.5
Perioperative urine output
≥ 500 mL	Ref				0
100–499 mL	1.149	1.034–2.086	0.032	0.384	1
< 100 mL	2.374	1.628–3.461	< 0.001	0.865	2.5