Table 1. Demographic characteristics of patients included in the study.

Patient characteristics	All	Symptomatic	Asymptomatic
Number, n	80	45	35
Age, years ± SD	68±8	68±8	67±8
Sex M/F, n	70/9	39/5	31/4
Risks Factors (%)
Contralateral occlusion	19	18	20
Hipertensive	59.5	56.8	63
DM (diabetes mellitus)	27.8	27	28,5
Cholesterol	45.5	41	51
Cardiopaty	28	23	34
Isquemic cardiopaty	19	13.6	26
ATF (atrial fibrillation)	5	4.5	5.7
Intermittent claudication	34	25	46
Tobacco	36.7	34	40
Medications (%)
Statin	21.5	18.8	26
Anticoagulant	6.3	6.8	6