Table 2.

BMI and renal parameters after RYGB.

	Diabetes	Baseline	6 months	12 months
BMI (kg/m2)	YES	47 ± 8	35 ± 6*†	32 ± 6‡
	NO	48 ± 8	35 ± 7*†	31 ± 6‡
Plasma creatinine (mg/dl)	YES	0.64 ± 0.11	0.63 ± 0.09	0.63 ± 0.09
	NO	0.72 ± 0.12	0.68 ± 0.15	0.71 ± 0.11
Urinary cystatin (µg/day)	YES	81 ± 58	90 ± 35	83 ± 40
	NO	71 ± 33	55 ± 26	75 ± 31
Urinary creatinine (mg/day)	YES	14.7± 5.9	10.9 ± 4.9*	12 ± 3.4‡
	NO	14.4 ± 4.4	9.6 ± 4.2*†	12.4 ± 3.6
Urinary albumin (mg/day)	YES	26 ± 50	18 ± 33	15 ± 29
	NO	10 ± 6	5 ± 2*†	14 ± 20
Urinary protein (mg/day)	YES	181 ± 165	109 ± 68	133 ± 67
	NO	122 ± 53	80 ± 39†	125 ± 58

BMI, body mass index. RYGB, Roux-en-Y gastric bypass.

Data expressed as mean ± SD.

^*p<0.05, baseline vs. 6 months;

^†p<0.05, 6 months vs. 12 months;

^‡p<0.05, baseline vs. 12 months. (nonparametric, Wilcoxon signed-rank test)