Comparison of plaque prevalence and features between Caucasians and Chinese
| Extracranial carotid artery | Intracranial artery | |||||
| Caucasians (n=26) | Chinese (n=55) | P value | Caucasians (n=26) | Chinese (n=55) | P value | |
| Plaque | 19 (73.1) | 27 (49.1) | 0.055 | 10 (38.5) | 38 (69.1) | 0.02 |
| Presence of luminal stenosis | 15 (57.7) | 20 (36.4) | 0.09 | 11 (42.3) | 40 (72.7) | 0.01 |
| Number of plaques per subject* | – | – | – | 1.7±0.7 | 1.7±0.9 | 0.85 |
| Plaque features | ||||||
| LRNC | 16 (61.5) | 23 (41.8) | 0.15 | 2 (7.7) | 17 (30.9) | 0.03 |
| IPH | 6 (23.1) | 10 (18.2) | 0.77 | 1 (3.9) | 2 (3.6) | >0.99 |
| Calcification | 7 (26.9) | 6 (10.9) | 0.10 | 0 | 8 (14.6) | 0.050 |
| Luminal surface disruption | 9 (34.6) | 2 (3.6) | <0.001 | 0 | 4 (7.3) | 0.30 |
| HRP | 11 (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.