. 2018 Mar 12;29(4):1085–1086. doi: 10.1681/ASN.2018020176

Table 1.

Patient demographics, blood, and urine creation before and after bariatric surgery

Clinical/Laboratory Feature
	Lieske et al.⁴			Getty et al.⁵		Serpa Neto et al.⁶
	Baseline	Postoperative		Baseline	Postoperative	Baseline	Postoperative
	Baseline	6 mo	12 mo	Baseline	6 mo	Baseline	8 mo
Weight, kg	121.2±18.4	87.1±18.2^a	75.7±9.2^a	132.2±23	95.4±18.7^a	122.76±18.98	83.77±13.53^a
Body mass index, kg/m²	45.7±5.0	32.5±5.2^a	28.4±2.0^a	47.6±6.3	34.08±5.5^a	46.17±5.44	31.47±3.71^a
Serum creatinine, mg/dl	0.8±0.2	0.8±0.1	0.7±0.1	0.83±0.21	0.72±0.16^a	0.83±0.20	0.69±0.13^a
Urine creatinine,^b mg/24 h	1342±44	1019±213	1035±255	1631.5	1445.3	1777.9	1130.7
Change in urine creatinine versus baseline, %	—	−25.1	−22.9	—	−11.4	—	−36.4
Creatinine clearance, ml/min	120±64	95±30	98±27	136.5±53	139.4±52	148.75±35.27	113.8±31.7^a

Values are mean±SD. —, not available.

P value <0.001 versus baseline.

24-hour urine creatinine in Getty et al.⁵ and Serpa Neto et al.⁶ is calculated from the formula urine creatinine=plasma creatinine×creatinine clearance.