ABSTRACT

Demography Female 30 30 Mean age (years) 67 67 Symptoms leading to randomization Amaurosis fugax 24 25 Transient ischemic attack 37 39 Retinal infarct 2 1 Hemisphere stroke 25 26 Symptoms more than 6 months prior to randomization

8 6

Never symptomatic 4 3 Vascular risk factors at randomization Hypertension 53 58 Mean SBP (mmHg) 152 152 Mean DBP (mmHg) 84 84 Ischemic heart disease 39 37 Previous history of myocardial infarction 19 17 Peripheral vascular disease 24 20 Diabetes 14 13 Current cigarette smoking 28 27 Ex-smoker 50 50 Cholesterol >6.5 mmol/L 34 32 Atrial fibrillation 5 5 Other cardiac embolic source 1 2 Angiographic characteristics Mean percentage ipsilateral carotid stenosis (CC method)

87 86

Contralateral carotid artery occlusion 10 8