Characteristics of imaging and endovascular procedures
| Characteristic | Age <80 | Age ≥80 | P value |
| Day of the week, n (%) | n=180 | n=74 | 0.16 |
| Monday | 29 (16.1) | 11 (14.9) | |
| Tuesday | 28 (15.6) | 6 (8.1) | |
| Wednesday | 30 (16.7) | 20 (27.0) | |
| Thursday | 24 (13.3) | 12 (16.2) | |
| Friday | 26 (14.4) | 15 (20.2) | |
| Saturday | 21 (11.7) | 5 (6.8) | |
| Sunday | 22 (12.2) | 5 (6.8) | |
| Time of day, n (%) | n=173 | n=68 | 0.83 |
| Between 06:00–18:00 | 112 (64.7) | 43 (63.2) | |
| Outside 06:00–18:00 | 61 (35.3) | 25 (36.8) | |
| Occurring on weekend, n (%) | 43 (23.9) | 10 (13.5) | 0.07 |
| Imaging modalities used, n (%) | n=196 | n=78 | 0.68 |
| CT | 130 (66.3) | 57 (73.1) | |
| CTA | 121 (61.7) | 52 (66.7) | |
| CTP | 59 (30.1) | 19 (24.4) | |
| MRA | 2 (1.0) | 0 (0) | |
| MRI | 1 (0.5) | 0 (0) | |
| Received IA tPA, n (%) | 104 (53.6) | 43 (55.1) | 0.82 |
| Primary technique used, n (%) | n=196 | n=78 | 0.91 |
| Stent retriever | 83 (42.3) | 38 (48.7) | |
| Direct aspiration (ADAPT) | 79 (40.3) | 28 (35.9) | |
| Penumbra with separator | 26 (13.3) | 9 (11.5) | |
| IA tPA | 2 (1.0) | 1 (1.3) | |
| Other | 6 (3.1) | 2 (2.6) | |
| Procedural times, min (mean±SEM) | |||
| Stroke onset to hospital arrival | 205.2±17.1 | 164.1±19.9 | 0.17 |
| Hospital arrival to first imaging | 63.1±10.6 | 50.6±19.6 | 0.54 |
| Stroke onset to first imaging | 255.1±22.7 | 193.9±26.0 | 0.13 |
| Hospital arrival to groin puncture | 144.2±13.5 | 140.6±23.7 | 0.89 |
| Stroke onset to IA tPA | 141.5±9.7 | 130.4±21.5 | 0.59 |
| First imaging to groin puncture | 117.8±13.4 | 100.1±12.8 | 0.43 |
| Stroke onset to groin puncture | 318.3±18.3 | 275.5±22.0 | 0.19 |
| Groin puncture to revascularization | 47.0±3.3 | 49.9±4.7 | 0.64 |
| Stroke onset to revascularization | 356.6±18.4 | 299.0±18.6 | 0.08 |
Threshold for statistical significance was set at p<0.05.
CT, CT tomography; CTA, CT angiography; CTP, CT perfusion; IA, intra-arterial; MRA, magnetic resonance angiography; mRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke Scale; tPA, tissue plasminogen activator.