Table 3.

Univariate association and predictive ability for need for blood transfusion during admission for nephrectomy (n=6,031)

Variable	n	p-value	AUC
Serum haemoglobin	4,293 (71.2%)	<0.001	0.722
Clinical T stage	4,680 (77.6%)	<0.001	0.713
WHO-PS	4,509 (74.8%)	<0.001	0.614
Procedure	5,214 (86.5%)	<0.001	0.609
Clinical N stage	4,707 (78.0%)	<0.001	0.606
Clinical presentation	4,858 (80.6%)	<0.001	0.599
Clinical M stage	4,686 (77.7%)	<0.001	0.595
Serum creatinine	4,302 (71.3%)	0.022	0.575
Age	5,178 (85.9%)	<0.001	0.574
Sex	5,197 (86.2%)	0.106	0.520

AUC = area under the curve; WHO-PS = World Health Organization performance status