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Characteristics of the study population.
| Characteristic | |
|---|---|
| Age-year | |
| Mean | 65.5 |
| Range | 54–76 |
| Male sex-no. (%) | 19 (57.6) |
| Hypertension-no. (%) | 28 (84.8) |
| Hyperlipidemia-no. (%) | 27 (81.8) |
| Diabetes mellitus-no. (%) | 13 (39.3) |
| Cigarette smoking-no. (%) | 24 (72.7) |
| History of stroke-no. (%) | 5 (15.2) |
| Current contralateral carotid disease-no. (%) | 13 (39.3) |
