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Table 1 Investigations to look at stroke pathophysiology performed in the different groups

From: Differences in the distribution of stroke subtypes in a UK black stroke population – final results from the South London Ethnicity and Stroke Study

  Black stroke patients White stroke patients
All Caribbean African
n = 1200
n (%)
n = 809
n (%)
n = 391
n (%)
n = 1200
n (%)
ECG 1183 (98.6) 795 (98.3) 388 (99.2) 1180 (98.3)
24 hr ECG 81 (6.8) 54 (6.7) 27 (6.9) 142 (11.8)
Echocardiogram 616 (51.3) 396 (48.9) 220 (56.3) 572 (47.7)
Carotid duplexa 989 (95.1) 687 (95.9) 302 (93.2) 1008 (92.9)
Brain CT 1143 (95.3) 772 (95.4) 371 (94.9) 1159 (95.4)
Brain MRI 573 (47.8) 375 (46.4) 198 (50.6) 526 (43.8)
DWI-MRI 454 (37.8) 300 (37.1) 154 (39.4) 396 (33.0)
CT-angiography 164 (13.7) 101 (12.5) 63 (16.1) 160 (13.3)
MR-angiography 349 (29.1) 225 (27.8) 124 (31.7) 295 (24.6)
Any extracranial vessel imaginga 996 (95.8) 690 (96.4) 306 (94.4) 1038 (95.6)
Thrombophilia screena 214 (20.6) 107 (15.2) 107 (33.0) 145 (12.1)
  1. ECG, Electrocardiography; CT, Computed tomography; MRI, Magnetic resonance imaging; DWI, Diffusion weighted imaging
  2. All numbers represent the number of patients in whom the investigation has been done, with in brackets the corresponding percentage of all patients
  3. aPercentages refer to ischaemic stroke patients only