Table 1:

Demographic and clinical characteristics of patients with severe internal carotid artery stenosis who underwent carotid endarterectomy

Characteristic	No. (%) of patients^*^†
Characteristic	Total n = 219	Case subjects n = 145	Control subjects n = 67
Male sex	139 (63.5)	90 (62.1)	44 (65.7)
Age, mean ± SE; yr
Overall	72.1 ± 0.6	71.9 ± 0.8	72.9 ± 1.2
Male participants	71.9 ± 0.8	71.0 ± 1.0	73.9 ± 1.6
Female participants	72.4 ± 0.9	73.7 ± 1.1	68.9 ± 1.6
Lateralization of carotid endarterectomy
Right	114 (52.0)	73 (50.3)	37 (55.2)
Left	105 (47.9)	72 (49.6)	30 (44.8)
Place of residence
Regina	88 (39.3)	54 (37.2)	32 (47.8)
Outside Regina	131 (57.5)	91 (62.8)	35 (52.2)
Index neurologic event
Motor transient ischemic attack	78 (35.2)	49 (33.8)	28 (41.8)
Phasic transient ischemic attack	25 (11.4)	18 (12.4)	7 (10.4)
Sensory transient ischemic attack	18 (7.8)	14 (9.6)	3 (4.5)
Amaurosis fugax	66 (28.3)	53 (36.6)	9 (13.4)
Completed minor stroke	32 (14.2)	11 (7.6)	20 (29.8)

Note: SE = standard error.
↵* Except where noted otherwise.
↵† The date of the index neurologic event could not be determined for 7 patients, who, therefore, could not be categorized as case or control subjects.