Baseline demographic and clinical data
| All (n=108) | Octogenarians (n=79) | Nonagenarians (n=29) | P value | |
| Age, mean (SD) | 86.4 (4.5) | 84.2 (2.8) | 92.3 (2.3) | |
| Female, n (%) | 71 (65.7) | 46 (58.2) | 25 (86.2) | <0.01 |
| Median baseline mRS (IQR) | 1 (0, 2) | 1 (0, 1) | 1 (1, 2) | 0.08 |
| Medical history | ||||
| Hypertension, n (%) | 87 (81.3) | 61 (77.2) | 26 (89.7) | 0.18 |
| Diabetes, n (%) | 20 (18.7) | 15 (19.0) | 5 (17.2) | 1 |
| Hyperlipidemia, n (%) | 52 (48.6) | 36 (45.6) | 16 (55.2) | 0.39 |
| Atrial fibrillation, n (%) | 75 (70.1) | 54 (68.4) | 21 (72.4) | 0.82 |
| CAD, n (%) | 31 (29.0) | 21 (26.6) | 10 (34.5) | 0.47 |
| Prior stroke, n (%) | 23 (21.5) | 18 (22.8) | 5 (17.2) | 0.61 |
| Smoking | ||||
| Unknown, n (%) | 13 (12.0) | 10 (12.7) | 3 (10.3) | 0.10 |
| Never, n (%) | 62 (57.4) | 40 (50.6) | 22 (75.9) | |
| Prior, n (%) | 31 (28.7) | 27 (34.2) | 4 (13.8) | |
| Current, n (%) | 2 (1.9) | 2 (2.5) | 0 (0) | |
| Stroke details | ||||
| Median time since LSN, min (IQR) | 246 (119, 375) | 236 (91, 393) | 290 (160, 341) | 0.92 |
| Median NIHSS (IQR) | 17 (13, 22) | 17 (13, 23) | 17 (13, 20) | 0.44 |
| Intravenous tPA, n (%) | 59 (54.6) | 42 (53.2) | 17 (58.6) | 0.67 |
CAD, coronary artery disease; LSN, last seen normal; NIHSS, National Institute of Health Stroke Scale; tPA, tissue plasminogen activator.