The development of proteinuria and renal insufficiency after unilateral nephrectomy according to body mass index at the time of surgery. The development of proteinuria and renal insufficiency after unilateral nephrectomy according to body mass index at the time of surgery. The average follow-up time after nephrectomy was 19.6 yr for the obese compared with 11.3 yr for the nonobese subjects. Reprinted from reference 59, with permission. Connie L. Davis, and Francis L. Delmonico JASN 2005;16:2098-2110 ©2005 by American Society of Nephrology