Figure 2

Average variability (measured by standard deviation) of estimated glomerular filtration rate variability by the follow-up year and presence/absence of events for different chronic kidney disease stages. CKD – Chronic Kidney Disease. eGFR: estimated Glomerular Filtration Rate .SD: standard deviation. Event: dialysis and/or dialysis-free death. Non-event: absence of dialysis and/or dialysis-free death. The error bar is the standard error for the mean of the estimated Glomerular Filtration Rate variability (measured by standard deviation). Early stage 3 CKD: P < 0.001 for all pairs of the contrast between events vs. non-events. Late stage 3 CKD: P < 0.001 for all pairs of the contrast between events vs. non-events. Stage 4 CKD: P < 0.001 for the first year (p > 0.05 for the other years) of the contrast between events vs. non-events.