Demographic and clinical characteristics of the 303 patients
| Characteristic | Data |
|---|---|
| Age, y (mean ± SD) | 68 ± 9 |
| Sex | |
| Male | 194 (64%) |
| Female | 109 (36%) |
| Hypertension | 276 (91%) |
| Diabetes | 97 (32%) |
| Hyperlipidemia | 233 (77%) |
| Coronary artery disease | 197 (65%) |
| Prior carotid endoarterectomy | 45 (15%) |
| Prior neck irradiation | 3 (1%) |
Note.—Except for age, data are number (%) of patients.