Baseline characteristics of patients in OXVASC and CUHK-SR
| Characteristics | OXVASC (n=1287) | CUHK-SR (n=691) | P value |
| Age, years | 69 (13.9) | 66 (12.3) | <0.001 |
| Age ≥70 years | 715 (55.6) | 279 (40.4) | <0.001 |
| Male sex | 667 (51.8) | 441 (63.8) | <0.001 |
| Ever-smoker | 688 (53.5) | 270 (39.1) | <0.001 |
| Male smoker | 431 (64.7) | 174 (39.5) | <0.001 |
| Female smoker | 257 (41.5) | 96 (38.4) | 0.407 |
| History of hypertension | 707 (54.9) | 454 (65.6) | <0.001 |
| History of diabetes | 169 (13.1) | 181 (26.2) | <0.001 |
| History of dyslipidaemia | 436 (33.9) | 354 (51.2) | <0.001 |
| Atrial fibrillation* | 191 (14.9) | 78 (11.3) | 0.028 |
| History of ischaemic stroke or TIA | 192 (14.9) | 144 (20.8) | 0.001 |
| History of ischaemic heart disease | 166 (12.9) | 54 (7.8) | <0.001 |
| Event type | <0.001 | ||
| TIA | 842 (65.4) | 208 (30.1) | |
| Minor stroke | 445 (34.6) | 483 (69.9) | |
| Presence of ICAS | 257 (20.0) | 297 (43.0) | <0.001 |
| No of arteries† affected | <0.001 | ||
| 0 | 1030 (80.0) | 394 (57.0) | |
| 1 | 162 (12.6) | 148 (21.4) | |
| ≥2 | 95 (7.4) | 149 (21.6) |
Values are means (SD) or medians (IQR) or numbers (%); Student’s t-tests were used for comparison of continuous variables and χ2 tests for categorical variables.
*History of atrial fibrillation and newly diagnosed atrial fibrillation after the index stroke or TIA.
†Including 11 cerebral arteries: bilateral intracranial internal carotid arteries, middle/anterior/posterior cerebral arteries, intracranial vertebral arteries and basilar artery.
CUHK-SR, the Chinese University of Hong Kong Stroke Registry; ICAS, intracranial atherosclerotic stenosis; OXVASC, Oxford Vascular Study; TIA, transient ischaemic attack.