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Least squares mean (SE) serum potassium levels over time by study visit and change in serum potassium from baseline to week 4 in patients with stage 3b–5 CKD or stage 1–3a CKD (efficacy population; n=626). Shaded area denotes target serum K+ range: 3.8–5.0 mEq/L. 95% CI, 95% confidence interval; K+, potassium; LS, least squares; SE, standard error of the mean.
