Table 1.

Baseline Demographic and Clinical Characteristics of Patients Undergoing Carotid Artery Stenting in C2R for Primary Atherosclerosis

Characteristic - n (%)	All patients 2141* (100%)	Asymptomatic 1180 (55.1%)	Symptomatic 961 (44.9%)
Age -yr., mean (SD†)	67.8 (7.8)	68.3 (7.5)	67.1 (8.1)
Male sex	1399 (65.3)	744 (63.1)	655 (68.2)
White race‡	1965 (91.8)	1082 (91.7)	883 (92.0)
Risk factors§
Hypertension	1824 (88.7)	1040 (91.5)	784 (85.2)
Diabetes	846 (39.9)	488 (41.6)	358 (37.9)
Prior or current smoker	1597 (74.7)	894 (75.9)	703 (73.2)
Previous cardiovascular disease	955 (46.2)	594 (51.9)	361 (39.0)
Previous coronary-artery bypass	467 (21.8)	291 (24.7)	176 (18.3)
Lesion Characteristics
Percent stenosis at enrollment -mean (SD)	84.2 (9.8)	85.0 (8.6)	83.2 (11.1)
Length of lesion, mm - mean (SD)	21.0 (11.0)	21.9 (10.8)	19.8 (11.0)
Left carotid artery treated	1085 (50.7)	584 (49.5)	501 (52.1)

^*The first C2R-eligible revascularization for 2141 patients

^†SD = Standard Deviation

^‡Race was self-reported

^§Missing data for hypertension (86), diabetes (24), previous cardiovascular disease (75), stenosis (14), lesion length (315)