Figure 2

Correlation between estimated sodium excretion and measured sodium excretion categorized by eGFR. Significant correlations were recognized between estimated and measured sodium excretion in patients with eGFR >60 and 30–60 mL/min (R = 0.52, P < 0.01 and R = 0.47, P < 0.01, respectively). There was apparent correlation in patients with eGFR <30 mL/min (R = 0.60, P < 0.01)