Baseline characteristics of the 110 patients studied
| Characteristics | No. (%) |
|---|---|
| Patients | 110 |
| Mean age (range) (years) | 72.6 (56–86) |
| Men | 78 (71) |
| Women | 32 (29) |
| Ipsilateral ICA stenosis | |
| 70%–90% | 106 (96.3) |
| >90% | 4 (3.7) |
| Plaque structure | |
| Type 5 | 12 (11) |
| Types 3 and 4 | 72 (65) |
| Types 1 and 2 | 26 (24) |
| Contralateral ICA stenosis | |
| 0%–50% | 68 (62) |
| 50%–69% | 24 (22) |
| 70%–99% | 12 (11) |
| Occlusion | 6 (5) |
| Presenting symptoms | |
| TIA | 24 (22) |
| Stroke | 6 (5) |
| Asymptomatic | 80 (73) |
| Vascular risk factors | |
| Chronic renal failure | 5 (4.5) |
| Hypertension | 92 (84) |
| Cigarette smoking | 49 (45) |
| Diabetes | 45 (41) |
| Hyperlipidemia | 60 (55) |
| Chronic obstructive pulmonary disease | 8 (7) |
| Coronary artery disease | 36 (33) |
| Peripheral vascular disease | 17 (15) |
Note:—TIA indicates transient ischemic attack; ICA, internal carotid artery.