Fig 2. The burden of (A) cardioembolic (CE), (B) non-CE, and (C) composite risk factors of ischemic stroke according to CHA₂DS₂-VASc scores.

CE risk factors: intracardiac thrombus, dense spontaneous echo contrast, or low left atrial appendage flow velocity (mean peak flow velocity ≤20 cm/sec). Non-CE risk factors: intracranial arterial stenosis, significant carotid stenosis, or complex aortic plaque. (Overall: n = 401; CHA₂DS₂-VASc score, 0: n = 14, 1: n = 60, 2: n = 74, 3: n = 83, 4: n = 94, 5: n = 42, ≥6: n = 34).