Placebo (n=120) Selenium (n=117) P value*
Age(Mean) 59.4 ± 11.3 years 58.9 ± 11.2 years 0.70
Sex
Male
Female

63 (52.5%)
57 (47.5%)

79 (68.7%)
36 (31.3%)

0.01
Risk Factors
Smoking
Hypertension
Dyslipidemia
Diabetes
Family history

72 (60%)
60 (50%)
35 (29.2%)
36 (30%)
11 (9.2%)

83(71%)
43 (36.8%)
32 (27.4%)
35 (29.9%)
13 (11.1%)

0.30
0.05
0.75
0.99
0.62
Body mass index (mean) 26.5 ± 3.7 26.9 ± 4.5 0.50
Left ventricular function
Ejection fraction ≥ 50%
Ejection fraction< 50%

75 (62.5%)
45 (37.5%)

73 (62.4%)
44 (37.6%)
0.90
Anemia 32 (26.7%) 22 (18.8%) 0.16
Hyperglycemia on admission 30 (25%) 17 (14.5%) 0.07
Baseline creatinine (mg/dl) 1.01 ± 0.3 0.98 ± 0.25 0.42
Contrast volume (cc) 175 ± 115 185 ± 110 0.35
Type of procedure CAG: 52 (43.3%)
PCI: 69 (56.7%)
CAG: 42 (35.9%)
PCI: 75 (64.1%)
0.24
Table 1: Background and procedural data of the study participants. *Pvalue <0.05 was considered statistically significant.