TABLE 1.
Demographic characters and clinical features of patients in the training and validation sets.
| Variable | Training (n = 87) | Validation (n = 39) | P-value |
| Male sex, n (%) | 54(62.07%) | 25(64.10%) | 0.828 |
| Age, y; mean ± SD | 72.45 ± 13.96 | 71.31 ± 10.80 | 0.180 |
| Baseline NIHSS, median (IQR) | 20(15–25) | 17(13–21) | 0.029 |
| Hypertension, n (%) | 62(71.26%) | 21(53.85%) | 0.069 |
| Diabetes mellitus, n (%) | 19(21.84%) | 4(10.26%) | 0.141 |
| Hyperlipidemia, n (%) | 20(22.99%) | 7(17.95%) | 0.641 |
| Atrial fibrillation, n (%) | 41(47.13%) | 21(53.85%) | 0.564 |
| Smoking, n (%) | 31(35.63%) | 11(28.21%) | 0.540 |
| Alcohol abuse, n (%) | 19(21.84%) | 7(17.95%) | 0.812 |
| ASPECTS on NCCT, median (IQR) | 7(5–9) | 7(4–9) | 0.932 |
| HVS of MCA, n (%) | 49(56.32%) | 19(48.72%) | 0.446 |
| Hemorrhage transformation, n (%) | 33(37.93%) | 18(46.15%) | 0.435 |
| Collateral score, median (IQR) | 1(1–1) | 1(1–1) | 0.746 |
| Right side of the MCA M1 occlusion, n (%) | 42(48.28%) | 23(58.97%) | 0.336 |
| ICA occlusion, n (%) | 36(41.38%) | 15(38.46%) | 0.845 |
SD, standard deviation; NIHSS, National Institutes of Health Stroke Scale; IQR, interquartile range; ASPECTS, Alberta Stroke Program Early CT Score; NCCT, non-contrast computed tomography; HVS, hyperdense vessel sign; MCA, middle cerebral artery; ICA, internal carotid artery.