Recurrent stroke risk is high after a single cerebrovascular event in patients with symptomatic 50-99% carotid stenosis: a cohort study

Table 3 Cox regression analyses of the risk of recurrent ipsilateral ischemic stroke

	Crude hazard ratio	p-value	Adjusted hazard ratio†	p-value
Clinically stable	1.0	-	1.0	-
Clinically unstable	1.5	p = 0.34	1.3	p = 0.52
Clinically highly unstable	0.6	p = 0.55	0.7	p = 0.58
0 events 7 days before the presenting event	1.0	-	1.0	-
1 event 7 days before the presenting event	2.1	p = 0.07	1.9	p = 0.16
≥2 events 7 days before the presenting event	0.6	p = 0.64	0.9	p = 0.93
0 events 7 days after* the presenting event	1.0	-	1.0	-
1 event 7 days after* the presenting event	0.3	p = 0.17	0.2	p = 0.15
≥2 events 7 days after* the presenting event	1.0	p = 0.97	0.8	p = 0.78

* For events after the presenting event: Only additional TIA or amaurosis fugax that occurred before CEA and before recurrent ipsilateral ischemic stroke were analyzed.
† Adjusted for age, sex, degree of symptomatic carotid stenosis and type of presenting event.

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