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Table 2 Baseline characteristics of study population

From: Plaque morphology detected with Duplex ultrasound before carotid angioplasty and stenting (CAS) is not a predictor of carotid artery in-stent restenosis, a case control study

Variable Data
  ISR ≥70% No ISR p value
N 10 50  
Age, years 69.8 ± 7.6 68.2 ± 8.7 0.580
Female sex 4 (40%) 8 (16%) 0.101
Right side 6 (60%) 19 (38%) 0.294
Symptomatic carotid stenosis 4 (40%) 32 (64%) 0.178
  Stroke 2 (20%) 21 (42%) 0.291
  Hemispherical TIA 2 (20%) 10 (20%) 1.000
Arterial Hypertension 10 (100%) 48 (96%) 1.000
Hyperlipidemia 10 (100%) 36 (72%) 0.098
Tobacco use 4 (40.0%) 13 (26%) 0.448
Diabetes mellitus 2 (20%) 11 (22%) 1.000
Coronary artery disease 3 (30%) 16 (32%) 1.000
Peripheral occlusive arterial disease 3 (30%) 7 (14%) 0.347
Atrial fibrillation 1 (12.5%) 3 (6%) 0.528
CEA restenosis 3 (30%) 6 (12%) 0.163
Contralateral ICA occlusion 3 (30%) 7 (14%) 0.347
Contralateral ICA stenosis ≥70% 2 (20%) 13 (26%) 1.000
Stenosis ≥ 90% before CAS 7 (70%) 22 (44%) 0.175
Median follow-up time (month, IQR) 15 (4.7 - 35.4) 40.2 (26.7 – 59.3) 0.024*
PSV >120 cm/s after CAS 4 (40%) 3 (6%) 0.012
Re-interventions 6 (60%) 0 (0%) <0.001
  1. *significant difference.