Table 5. Intraoperative blood transfusion.

Variable	Blood transfusion (n)		Univariate	Multivariate
	Yes	No	p-value	p-value	OR (95% CI)
Type of nephrectomy			0.095	0.043	3.8 (1.1–7.0)
Open	6	12
Laparoscopic	1	14
Number of nephrectomy			0.815	0.548	-
Unilateral	4	16
Bilateral	3	10
Kidney volume (g)			0.607	0.999	-
<1,500	4	18
≥1,500	3	8

OR, odds ratio; CI, confidence interval.