Asymptomatic and Symptomatic Carotid Stenosis: An Obsolete Classification?

Table 4

Risk model by Rothwell for ipsilateral territorial infarcts in all patients in the medical treatment branch of ECST [61]. CI: confidence interval.

	P	Hazard ratio	95% CI
Cerebral events versus ocular events	0.008	2.45	1.27–4.75
Residual neurological signs after 7 days	0.006	1.30	1.08–1.57
Diabetes	0.007	1.82	1.18–2.80
Any ischemic event within the last 2 months	0.003	1.71	1.20–2.44
Number of events within the last 3 months (per event)	0.01	1.02	1.01–1.03
Previous myocardial infarction	0.02	1.31	1.04–1.65
Degree of carotid stenosis	0.0000	1.34	1.30–1.38
Plaque surface irregularity	0.01	1.80	1.14–2.83
Poststenotic collapse of the internal carotid artery	0.03	0.40	0.17–0.94
Age (per year)	0.62	1.01	0.98–1.03
Male sex	0.31	1.23	0.83–1.82
Systolic blood pressure (per 10 mmHg)	0.82	1.05	0.90–1.15
Diastolic blood pressure (per 10 mmHg)	0.61	1.10	0.80–1.30
Peripheral vascular disease	0.90	1.03	0.65–1.63
Angina without previous myocardial infarction	0.77	0.96	0.71–1.29
ECG signs of left ventricular hypertrophy	0.90	1.07	0.40–2.10
Cerebral infarct on symptomatic side on CT	0.18	1.32	0.88–1.96
Occlusion of the contralateral internal carotid artery	0.96	1.00	0.72–1.63