Table 2.

Features of the multivariable models to predict long-term postoperative eGFR

Feature	Estimate	SE	P value
RN
Intercept	4.37	4.27	0.31
Age (year)	– 0.105	0.0329	0.001
Preoperative eGFR (ml/min/1.73 m2)	0.674	0.0259	< 0.001
RGFR of the operative side (ml/min/1.73 m2)	– 0.152	0.0278	< 0.001
RGFR of the healthy side (ml/min/1.73 m2)	0.204	0.0288	< 0.001
Serum cystatin C (mg/L)	0.914	2.30	0.69
Diabetes	– 3.57	1.12	0.002
Surgical method
Open surgery	Reference
Laparoscopic surgery	0.480	0.975	0.62
Robotic surgery	3.96	1.93	0.04
Time from surgery (month)	0.930	0.137	< 0.001
Preoperative eGFR × time from surgery (month)	– 0.00686	0.00101	< 0.001
RGFR of the healthy side × time from surgery (month)	0.00443	0.00107	< 0.001
Serum cystatin C × time from surgery (month)	– 0.452	0.0826	< 0.001
Surgical method × time from surgery (month)
Open surgery	Reference
Laparoscopic surgery	0.105	0.0316	0.001
Robotic surgery	0.0426	0.0719	0.55
PN
Intercept	15.3	4.91	0.002
Age (year)	– 0.103	0.0463	0.03
Preoperative eGFR (ml/min/1.73 m2)	0.864	0.0298	< 0.001
Serum cystatin C (mg/L)	– 6.62	2.64	0.01
Surgical method
Open surgery	Reference
Laparoscopic surgery	2.23	1.63	0.17
Robotic surgery	2.42	1.64	0.14
Time from surgery (month)	1.78	0.189	< 0.001
Age × time from surgery (month)	– 0.00672	0.00177	< 0.001
Preoperative eGFR × time from surgery (month)	– 0.0102	0.00128	< 0.001
Serum cystatin C × time from surgery (month)	– 0.556	0.0973	< 0.001
Surgical method × time from surgery (month)
Open surgery	Reference
Laparoscopic surgery	0.183	0.0527	< 0.001
Robotic surgery	0.163	0.0531	0.002

BMI body mass index; eGFR estimated glomerular filtration rate; PN partial nephrectomy; rGFR glomerular filtration rate measured by radionuclide; RN radical nephrectomy