Rate of intracranial vascular occlusion in patients with acute ischemic stroke (AIS) for the target population (n=1361)
| Occlusion site | All AIS (n=1361) | Percentage | Lower CI | Upper CI |
| None | 1079 | 79.3% | 76.8% | 81.5% |
| Any intracranial vascular occlusion | 282 | 21% | 15.3% | 29% |
| Breakdown of vascular occlusion by site | ||||
| M1 | 120 | 9% | 7.3% | 10.6% |
| M2 | 41 | 3% | 2.2% | 4.2% |
| M3 | 35 | 2.6% | 1.8% | 3.7% |
| PCA | 33 | 2.4% | 1.7% | 3.5% |
| BA | 24 | 1.7% | 1.1% | 2.7% |
| ACA | 15 | 1.1% | 0.7% | 1.9% |
| ICA-T | 8 | 0.6% | 0.3% | 1.2% |
| Other* | 6 | 0.4% | 0.2% | 1.0% |
*Other: superior cerebellar artery, posterior inferior cerebellar artery, anterior inferior cerebellar artery.
ACA, anterior cerebral artery; BA, basilar artery; ICA-T, internal carotid artery terminus; M1, M2, M3, branches of middle cerebral artery; PCA, posterior cerebral artery.