Table 5. Univariate and multivariate regression analysis of pre-operative risk factors for postoperative acute kidney injury.

	Postoperative AKI
Risk factors	Unadjusted OR (95% CI)	p	R2 square	Adjusted OR (95% CI)	p
Haemoglobin	1.07 (0.95-1.20)	0.26	-	-	-
Creatinine	0.92 (0.51-1.66)	0.77	-	-	-
Urea	1.02 (0.96-1.05)	0.78	-	-	-
HbA 1c	0.97 (0.86-1.09)	0.58	-	-	-
eGFR	0.96 (0.92-1.00)	0.34	-	-	-
Leucocyte count	0.91 (0.87-0.95)	0.79	-	-	-
Thrombocyte count	0.99 (0.96-1.02)	0.41	-	-	-
Monocyte count	1.20 (1.12-1.28)	0.0001	0.21	1.39 (0.96-2.01)	0.0001
CRP	1.90 (1.47-2.45)	0.0001	0.29	1.26 (0.82-1.95)	0.29
ESR	1.12 (1.07-1.16)	0.0001	0.30	1.11 (1.05-1.17)	0.0001
MPV	1.13 (1.35-1.96)	0.0001	0.17	1.12 (0.85-1.48)	0.43
HDL-C	1.01 (0.98-1.04)	0.75	-	-	-
LDL-C	0.99 (0.97-1.01)	0.50	-	-	-
Total cholesterol	0.99 (0.98-1.00)	0.36	-	-	-
Triglycerides	1.00 (0.99-1.01)	0.74	-	-	-
MHR	25.77 (22.37-29.17)	0.0001	0.19	21.57 (13.09-34.54)	0.0001

AKI, acute kidney injury; HDL-C, high-density lipoprotein cholesterol; eGFR, estimated glomerular filtration rate; LDL-C, low-density lipoprotein cholesterol;

CRP: C-reactive protein; ESR: erythrocyte sedimentation rate; HbA1c, glycated haemoglobin; MPV, mean platelet volume; MHR, monocyte-to-high-density

lipoprotein cholesterol ratio.