External validation of the Simplified PADUA REnal (SPARE) nephrometry system in predicting surgical outcomes after partial nephrectomy

Table 3 Correlation between nephrometries and peri-operative features

Variables	SPARE		R.E.N.A.L.		PADUA
	Coefficient	P-value	Coefficient	P-value	Coefficient	P-value
SPARE			0.61	< 0.001	0.79	< 0.001
R.E.N.A.L.	0.61	< 0.001			0.61	< 0.001
PADUA	0.79	< 0.001	0.84	< 0.001
Ischemia time (minutes)	0.37	< 0.001	0.38	< 0.001	0.4	< 0.001
Operative time (minutes)	0.28	< 0.001	0.23	< 0.001	0.25	< 0.001
EBL (mL)	0.11	0.11	0.15	0.03	0.13	0.07
Complications (Clavien-Dindo classification)	0.34	< 0.001	0.22	0.002	0.28	< 0.001
Length of stay (days)	0.18	0.009	0.13	0.06	0.16	0.03
PCE-1st year (%)	0.34	< 0.001	0.28	< 0.001	0.32	< 0.001
CKD upstaging (%)	0.17	0.01	0.23	0.01	0.24	< 0.001
Positive margin (%)	0.07	0.41	0.04	0.68	−0.03	0.7
Achievement of pentafecta (%)	−0.35	< 0.001	−0.29	0.001	−0.33	< 0.001

EBL estimated blood loss, PCE percent change of estimated glomerular filtration rate, CKD chronic kidney disease

ISSN: 1471-2490