Table 4.

Univariate regression analysis for predicting the likelihood of chronic kidney disease at one year.

Variable	CKD group		Chi-Square test		Standard Logistic regression
	NO CKD	CKD	X 2	P	Crude OR	P
	(n=380)	(n=33)			(95% CI)
Operative time:
<714 min	320 (%)	3 (%)	100.533	<0.0005	—	<0.0005
≥714 min	60 (%)	30 (%)			53.3
Blood loss:
<7750 ml	293	9	38.366	<0.0005	—	<0.0005
≥7750 ml	87	24			8.98
Preoperative RI
Absent	367	27	15.074	<0.0005	—	0.001
Present	13	6			6.274
GRWR:
<0.91	256	4	39.738	<0.0005	—	<0.0005
≥0.91	124	29			0.067

CKD, chronic kidney disease; OR, odds ratio; RI, renal impairment; GRWR, graft-to-recipient weight ratio.