Stroke characteristics
| All | Octogenarians (n=79) | Nonagenarians (n=29) | P value | |
| Imaging characteristics | ||||
| Core volume, mL (SD) | 11.2 (13.1) | 11.2 (13.9) | 12.4 (12.4) | 0.94 |
| Penumbra volume, mL (SD) | 113.3 (86.0) | 119.0 (89.9) | 100.2 (68.6) | 0.35 |
| Mismatch volume, mL (SD) | 101.9 (82.1) | 107.9 (86.8) | 88.23 (61.9) | 0.33 |
| Vessel occlusion | ||||
| ICA, n (%) | 18 (16.7) | 15 (19.0) | 3 (10.3) | 0.38 |
| MCA-M1, n (%) | 63 (58.3) | 43 (54.4) | 20 (69.0) | |
| MCA-M2, n (%) | 22 (20.4) | 18 (22.8) | 4 (13.8) | |
| Vertebrobasilar, n (%) | 5 (4.6) | 3 (3.8) | 2 (6.9) | |
| Vessel occlusion side | ||||
| Left, n (%) | 62 (57.4) | 51 (64.6) | 11 (37.9) | 0.02 |
ICA, internal carotid artery; M1, first segment of MCA; M2, second segment of MCA; MCA, middle cerebral artery.