Demographics of patients included in model development. Table 1: Clinical characteristics of patient cohorta
| Parameters | Measure | Total (N = 332) | MRI (n = 152) | CT (n = 180) | P Value |
|---|---|---|---|---|---|
| Female | No. (%) | 180 (54.22%) | 86 (56.58%) | 96 (53.33%) | .6303 |
| Age (yr) | Mean | 71.49 (SD, 15.94) | 70.72 (SD, 16.11) | 72.13 (SD, 15.77) | .4237 |
| NIHSS score | Median (IQR) | 16 (10–20) | 15 (8–19) | 16 (11–21) | .0496b |
| Received IV thrombolysis | No. (%) | 96 (28.92%) | 35 (23.03%) | 61 (33.89%) | <.0001b |
| Stroke onset time | .6013 | ||||
| Stroke-onset to image time (min) | Median (IQR) | 150 (101–335) | 167 (123–255) | 113 (83–191) | – |
| Unknown onset | No. (%) | 80 (24.10%) | 42 (27.63%) | 38 (21.11%) | – |
| Onset <4.5 hr | No. (%) | 168 (50.60%) | 71 (46.71%) | 97 (53.89%) | – |
| Onset <6 hr | No. (%) | 185 (55.72%) | 77 (50.66%) | 108 (60.00%) | – |
| Thrombectomy outcome | .5191 | ||||
| Unsuccessful | No. (%) | 59 (17.78%) | 28 (18.42%) | 31 (17.22%) | |
| mTICI 0, 1, 2a | n, n, N | 20, 4, 34 | 11, 2, 15 | 9, 2, 20 | |
| Successful, 2+ passes | No. (%) | 133 (40.06%) | 57 (37.50%) | 76 (42.22%) | |
| mTICI 2b, 2c, 3 | n, n, N | 73, 31, 25 | 37, 12, 8 | 37, 20, 19 | |
| Successful, first pass | No. (%) | 140 (42.17%) | 67 (44.08%) | 73 (40.56%) | |
| mTICI 2b, 2c, 3 | n, n, N | 59, 34, 43 | 31, 14, 22 | 31, 21, 21 |