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. 2020 Jun 10;5(3):271–277. doi: 10.1177/2396987320932065

Table 1.

Baseline characteristics of included patients, stratified by degree of stenosis.

Symptomatic ICA stenosis
Total (n = 883) <50% or no stenosis (n = 727) 50–100% stenosis (n = 156)
Age, median (IQR) 70 (60–79) 69 (59–79) 73 (66–81)
Male sex, n (%) 487 (55.2%) 373 (51.3%) 114 (73.1%)
Ethnicity, n (%)

  • White

 490 (55.5%) 383 (52.7%) 107 (68.6%)

  • Non-White

 94 (10.6%) 83 (11.4%) 11 (7.1%)

  • Unknown

 299 (33.9%) 261(35.9%) 38 (24.4%)
Diagnosis, n (%)

  • TIA

 250 (28.3%) 214 (29.4%) 36 (23.1%)

  • Ischaemic stroke

 576 (65.2%) 474 (65.2%) 102 (65.4%)

  • Amaurosis fugax

 47 (5.3%) 31 (4.3%) 16 (10.3%)

  • Retinal ischaemic stroke

 10 (1.1%) 8 (1.1%) 2 (1.3%)
Atrial fibrillation, n (%)

  • Yes, history

 107 (12.1%) 86 (11.8%) 21 (13.5%)

  • Yes, diagnosed during work-up

 38 (4.3%) 35 (4.8%) 3 (1.9%)

  • No

 736 (83.6%) 605 (83.2%) 131 (84.0%)
Diabetes mellitus, n (%) 186 (21.2%) 148 (20.4%) 38 (24.7%)
Hyperlipidaemia, n (%) 324 (36.8%) 256 (35.3%) 68 (43.9%)
Statin use, n (%) 345 (39.2%) 271 (37.3%) 74 (47.7%)
Hypertension, n (%) 469 (53.2%) 375 (51.7%) 94 (60.3%)
Symptomatic peripheral vascular disease, n (%) 66 (7.5%) 37 (5.1%) 29 (18.8%)
Smoking, n (%)

  • Yes

 244 (28.6%) 196 (28.0%) 48 (31.6%)

  • Stopped

 184 (21.6%) 140 (20.0%) 44 (29.0%)

  • No

 425 (49.8%) 365 (52.1%) 60 (39.5%)

IQR: interquartile range; ICA: internal carotid artery; TIA: transient ischaemic attack.