Table 1:

Baseline characteristics of the study population

PatientsMenWomenP Value
No.406242 (60%)164 (40%)
Age (mean ± SD, yr)62 ± 1462 ± 1362 ± 14.57
Symptomatic artery
    Carotid351 (86%)212 (88%)139 (85%).41
    Vertebrobasilar55 (14%)30 (12%)25 (15%)
Cerebrovascular symptoms
    Amaurosis fugax84 (21%)50 (21%)34 (21%).99
    TIA122 (30%)72 (30%)50 (30%).87
    Minor stroke200 (49%)120 (50%)80 (49%).87
Risk factors
    Smoking197 (49%)136 (56%)61 (37%)<.01
    Hypertension290 (71%)177 (73%)113 (69%).35
    Diabetes61 (15%)38 (16%)23 (14%).64
    Hypercholesterolemia319 (79%)177 (73%)142 (87%)<.01
    History of cardiac disease107 (26%)73 (30%)34 (21%).03
    History of cerebrovascular disease105 (26%)70 (29%)35 (21%).09
Calcifications
    Presence263 (65%)171 (71%)92 (56%)<.01
    Volume (mm3)53 ± 11466 ± 12433 ± 49<.01
  • Note:—TIA indicates transient ischemic attack.