Table 1

Demographics and clinical characteristics

CharacteristicSymptomaticAsymptomatic
No of cases1110
Average age (years)91.993
Male gender (n (%))7 (63.6)7 (70.0)
Ethnicity (n (%))
 Caucasian11 (100.0)10 (100.0)
 African-American0 (0.0)0 (0.0)
 Other0 (0.0)0 (0.0)
Hypercholesterolemia (n (%))7 (63.6)6 (60.0)
Hypertension (n (%))9 (81.8)6 (60.0)
Diabetes mellitus (n (%))2 (18.2)5 (50.0)
Cigarette smoking (n (%))
 Never6 (54.5)5 (50.0)
 Former5 (45.5)5 (50.0)
 Active at presentation0 (0.0)0 (0.0)
Premorbid CAD* (n (%))5 (45.5)6 (60.0)
Previous ischemic stroke or TIA† (n (%))3 (27.3)3 (30.0)
Average preoperative NIHSS score4.200.00
TIA as presentation (n (%))5 (45.5)0 (0.0)
Plaque ulceration (n (%))2 (18.2)0 (0.0)
Average degree of stenosis (% of vessel lumen)70.984.2
  • *Premorbid coronary artery disease is defined as a known diagnosis prior to a stroke event.

  • †Previous ischemic stroke/TIA indicates a past history of ischemic events before the intervention in this study was performed.

  • CAD, coronary artery disease; NIHSS, National Institutes of Health Stroke Scale; TIA, transient ischemic attack.