For renal outcome, the surgical group had significantly greater reduction in urine albumin–creatinine ratio (− 354.3 ± 1923.5 vs. 16.34 ± 270.9 mg/g, crude P < 0.001) and greater improvement in eGFR-MDRD (5.37 ± 18.53 vs. − 4.10 ± 14.77 mL/min/1.73 m2, crude P = 0.001) and eGFR-CKD-EPI (3.80 ± 15.72 vs. − 3.35 ± 12.59 mL/min/1.73 m2, crude P = 0.004) than the medical group (Table 2). Here, ALB is linked to chronic kidney disease.