Distribution of persons, person-years, chronic kidney disease (CKD) diagnosis (dx), and events by categories of baseline glomerular filtration rate (GFR) and urine protein-creatinine ratio (UPCR), N = 1,169. Each cell in the table describes the number of participants, overall and distributed by cohort affiliation; prevalence of glomerular CKD; number of events; number of person-years (p-y); and empirical incidence rate (IR; per 100 person-years) of the composite outcome event (50% GFR decline, renal replacement therapy, or GFR < 15 mL/min/1.73 m2) with 95% confidence interval. Cell coloring defines the final 6 GFR/proteinuria risk stages ordered from best to worst prognosis as follows: A (dark green), B (light green), C (gold), D (tan), E (salmon), and F (red). IRs expressed as events per 100 person-years. Cells with fewer than 15 participants do not have an IR calculated. Figure 1 from Furth et al, AJKD © National Kidney Foundation.