Multimodal imaging screening on 1462 patients presented with the different time window
| Item | Total | ≤4.5 hours | 4.5h~12 hours | P value |
| Age | 1462 | 59.25±9.46 (n=433) | 59.17±8.59 (n=1029) | 0.175 |
| Male (%) | 68.82 (298/433) | 66.18 (681/1029) | 0.505 | |
| Hypertension (%) | 76.67 (332/433) | 79.79 (821/1029) | 0.536 | |
| Atrial Fibrillation (%) | 8.78 (38/433) | 7.87 (81/1029) | 0.578 | |
| Diabetes (%) | 9.70 (42/433) | 9.33 (96/1029) | 0.732 | |
| Stroke location (left/right) | 228/205 | 491/538 | 0.425 | |
| CT screening | 433 (433/1462, 29.6%) | 1029 (1029/1462, 70.4%) | – | |
| CT excluding | ||||
| Acute stroke | 592 (592/1462, 40.5%) | 83 (83/433, 19.2%) | 509 (509/1029, 49.5%) | – |
| MRI screening | 870 (870/1462, 59.5%) | 350 (350/870, 40.2%) | 520 (520/870, 59.8%) | – |
| Patients treated based on MRI | ||||
| Finding | 601 (601/870, 69.1%) | 327 (327/601, 54.4%) | 274 (274/601, 45.6%) | – |
| 601/1462, 41.1% | 327/433, 75.5% | 274/1029, 26.6% | – | |
*More patients treated ≤4.5 hours*2=50.26, p=0.0001.