Figure 5.

Percentage of REGARDS participants ≥ 80 years of age with preserved eGFR_cr for whom this result was confirmed using eGFR_cys stratified by waist circumference and body mass index

eGFR_cr – estimated glomerular filtration rate using serum creatinine, eGFR_cys – estimated glomerular filtration rate using serum cystatin-C, REGARDS – REasons for Geographic And Racial Differences in Stroke. Preserved eGFR was defined as eGFR ≥ 60 ml/ min/1.73 m². High waist circumference was defined as > 102 cm among males and > 88 cm among females.