Table 2 Multivariate linear regression analysis for associated factors of renal function change at postoperative 12 months after partial nephrectomy.

From: Changes in kidney function according to ischemia type during partial nephrectomy for T1a kidney cancer

 

Univariated analysis

Multivariable analysis

B (95% CI)

p value

B (95% CI)

p value

Age, year

0.158 (− 0.150 to 0.467)

0.331

  

Body mass index (kg/m2)

− 1.132 (− 2.391 to 0.127)

0.077

  

Diabetes

0.754 (− 8.890 to 10.398)

0.877

  

Hypertension

6.145 (− 1.343 to 13.633)

0.097

  

Preoperative eGFR (ml/min/1.73m2)

− 0.22 (− 0.400 to − 0.039)

0.018

− 0.367 (− 0.598 to − 0.137)

0.020

Ischemic time (min)

− 0.251 (− 0.687 to 0.184)

0.254

  

Ischemic type

7.822 (0.435 to 15.208)

0.038

6.788 (0.982 to 13.789)

0.042

Operative time (min)

− 0.084 (− 0.227 to 0.058)

0.244

  

EBL (mL)

− 0.004 (− 0.023 to 0.016)

0.717

  

Tumor largest diameter (cm)

1.879 (− 2.742 to 6.500)

0.421

  

Tumor volume (cm3)

0.179 (− 0.315 to 0.673

0.474

  

RENAL score

2.796 (− 0.107 to 5.700)

0.059

  

Parenchyma thickness

Preoperative (mm)

− 0.756 (− 2.401 to 0.889)

0.357

  

Postoperative (mm)

− 0.993 (− 2.424 to 0.439)

0.116

  

Percent change (%)

− 0.822 (− 2.089 to 0.445)

0.008

0.797 (0.086 to 1.508)

0.029

Parenchymal enhancement ratio

Preoperative

− 0.117 (− 0.739 to 0.505)

0.106

  

Postoperative

− 0.621 (− 1.182 to − 0.060)

0.242

  

Percent change (%)

0.059 (− 0.434 to 0.552)

0.595

  
  1. B unstandardized coefficient, CI confidence interval, eGFR estimated glomerular filtration rate, EBL estimation of blood loss, RENAL RENAL nephrometry score, Parenchymal enhancement ratio the ratio of the parenchyma enhancement (HU) to the aorta enhancement (HU).
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