Demographic characteristics, risk factors profile, clinical, laboratory, coronary lesion findings and predicting mortality were compared between the two groups. Results: Compared with group 2, the prevalence of male gender, smoking, family history of CAD were higher in group 1 and the prevalence of arterial hypertension, diabetes mellitus were lower (84.8%; 57.6%; 18.2% and 30.3%; 3.0% of group 1 vs 55.6%; 33.3%; 2.8% and 69.4%; 22.2% of group 2, respectively; p < 0.05).