Table 2.

Characteristics of the subjects allocated to treatment with magnesium versus placebo.

Variable	Magnesium (n = 186)	Placebo (n = 177)	P Value
Age (SD), y	68.2 (8.3)	67.8 (7.9)	0.68
Sex, % female	26.3	35.6	0.06
Race, % white	81.2	75.1	0.16
Weight (SD), kg	83.6 (14.5)	81.2 (15)	0.12
History of hypertension, %	80.7	80.1	0.90
Diabetes mellitus, %	36.8	34.7	0.68
Previous MI, %	32.2	31.6	0.89
Ejection fraction (SD)	52.4 (11.8)	52.9 (12.8)	0.46
Magnesium level at baseline (SD)	1.92 (0.24)	1.89 (0.27)	0.16
Surgical procedure, %			0.94
CABG	80.7	79.7
CABG+valve	14.5	14.7
Valve	4.8	5.7
Redo surgery, %	0.5	0.0	0.99
Number of grafts	3.2 (1.2)	3.1 (1.3)	0.56
Cross-clamp time (SD), min	82.8 (33.5)	81.2 (33.9)	0.45
CPB time (SD), min	134.8 (49.4)	132.8 (52.7)	0.46

CABG, coronary artery bypass grafting; CPB, cardiopulmonary bypass