Table 2. Electrolyte levels and renal function of patients not on acute dialysis at the time of laboratory testing.

	Survivors (n=95)	Non-survivors (n=22)	p-value
Ca++ (mg/dL)	4.7 [4.6-4.9]	4.4 [3.8-4.7]	0.001
GFR (mL/min/1.73 m2)	60 [48-60]	59 [26-60]	0.042
Phosphorus (mg/dL)	2.9 [2.3-4.2]	3.2 [2.7-4.3]	0.334
Magnesium (mg/dL)	2.0±0.4	1.9±0.36	0.345

GFR: glomerular filtration rate calculated by the Modification of Diet in Renal Disease Study Group (MDRD). Values are expressed as the total mean ± 95% confidence interval OR the median [interquartile range].