Table 2

Comparison of plaque prevalence and features between Caucasians and Chinese

Extracranial carotid arteryIntracranial artery
Caucasians (n=26)Chinese (n=55)P valueCaucasians (n=26)Chinese (n=55)P value
Plaque19 (73.1)27 (49.1)0.05510 (38.5)38 (69.1) 0.02
Presence of luminal stenosis15 (57.7)20 (36.4)0.0911 (42.3)40 (72.7) 0.01
Number of plaques per subject*1.7±0.71.7±0.90.85
Plaque features
 LRNC16 (61.5)23 (41.8)0.152 (7.7)17 (30.9) 0.03
 IPH6 (23.1)10 (18.2)0.771 (3.9)2 (3.6)>0.99
 Calcification7 (26.9)6 (10.9)0.1008 (14.6)0.050
 Luminal surface disruption9 (34.6)2 (3.6) <0.001 04 (7.3)0.30
 HRP11 (42.3)9 (16.4) 0.03 1 (3.9)6 (10.9)0.42
  • Values are number (percentage) or mean±SD.

  • Bold indicates P-values<0.05.

  • *Number of plaques was only assessed in intracranial artery.

  • HRP, high-risk plaque; IPH, intra-plaque haemorrhage; LRNC, lipid-rich necrotic core.