CKD in the Elderly—Old Questions and New Challenges: World Kidney Day 2008

Prevalence of CKD stages by age groups in NHANES 1999 to 2004 and the Beijing study. For NHANES, CKD was defined as persistent albuminuria (spot urine albumin-creatinine ratio >30 mg/g) or estimated GFR <60 mL/min/1.73 m² using the MDRD Study equation. For the Beijing study, CKD was defined as persistent albuminuria, hematuria, or estimated GFR less than 60 mL/min/1.73 m² using an equation that computes eGFR 23% higher than the MDRD Study equation.

Counts and rates of new cases of kidney failure treated by dialysis and transplantation, by age. Rates adjusted for sex and race. Incident rates between 2000 and 2005 have increased for patients 75 and older, compared to steady growth for most other age groups. Reproduced with permission.¹⁸