Table 7. Rates of patients within optimal ranges for serum potassium, corrected calcium, and phosphate levels according to G category.

		K ≥ 4.0, ≤ 5.5 mEq/L	cCa ≥ 8.4, ≤ 10.3 mg/dl	P ≥ 2.5, ≤ 4.5 mg/dl
G3a	%	79.7	97.2	90.9
G3b	%	81.0*	94.6*	87.9*
G4	%	79.1	91.0*	86.2*
G5	%	73.5*	81.9*	56.1*

Numbers of patients within optimal ranges are expressed as % of each population.

Abbreviations: K, serum potassium; cCa, serum corrected calcium; P, serum phosphate.

*:p<0.05 vs. G3a.