Effects of Race and Sex on Measured GFR: The Multi-Ethnic Study of Atherosclerosis.

Background: Kidney failure disproportionately affects older blacks versus whites. The reasons are unknown and may be related to lower measured glomerular filtration rate (GFR) and higher levels of albuminuria in community-based population samples.

Study Design: Cross-sectional analysis of a substudy of a prospective cohort.