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