Table 3.

Multivariable regression analysis.

	Model 1	Model 2	Model 3	Model 4
	OR/β (95% CI) p value
AKI (OR)	0.60 (0.59, 0.81) <0.001	0.66 (0.49, 0.89) <0.001	0.68 (0.51, 0.92) 0.012	0.71 (0.52, 0.97) 0.034
AKI stages (β)	–0.02 (–0.03, −0.01) <0.001	–0.02 (–0.03, −0.00) <0.001	–0.02 (–0.03, −0.00) 0.009	–0.01 (–0.02, −0.00) 0.044

Multivariable regression analysis of AKI incidence. AKI stages (outcome of postoperative AKI was divided into four groups: stage 0, no AKI; stage 1, AKI grade 1; stage 2, AKI grade 2 and stage 3, AKI grade 3).

Model 1: non-adjusted.

Model 2: adjusted for age, sex, eGFR.

Model 3: model 2 plus hypertension, diabetes, diuretics.

Model 4: model 3 plus blood lossed, vasoactive drugs, Hb, Alb, amount of fluid infusion and out, operative time, ASA, lowest MAP and NSAIDs.