Baseline characteristics of derivation cohorts (n=4552)
| Variable | N (%) or median (IQR) |
| Cohort | |
| Austria | 459 (10) |
| Colombia | 322 (7) |
| Germany (1) | 182 (4) |
| Germany (2) | 311 (7) |
| Italy | 399 (9) |
| Portugal | 151 (3) |
| Spain | 512 (11) |
| Switzerland (1) | 1200 (26) |
| Switzerland (2) | 1016 (22) |
| Age (years) | 73 (62–81) |
| Sex | |
| Male | 2547 (56) |
| Female | 2005 (44) |
| NIHSS at admission | |
| ≤3 | 1932 (42) |
| 4–10 | 1545 (34) |
| ≥11 | 1075 (24) |
| Stroke location | |
| Middle cerebral artery territory involvement | 3120 (69) |
| Cortical involvement | 2332 (51) |
| Stroke cause | |
| Small-vessel occlusion | 893 (20) |
| Large-artery atherosclerosis | 831 (18) |
| Cardioembolism | 1374 (30) |
| Other or undetermined | 1454 (32) |
| Treatment | |
| Acute reperfusion treatment | 1286 (28) |
| ASM treatment after acute symptomatic seizure | 189 (4) |
| Acute symptomatic seizure | |
| Focal aware, short seizure | 58 (1.3) |
| Focal with impaired awareness, short seizure | 36 (0.8) |
| Focal to bilateral tonic clonic, short seizure | 88 (1.9) |
| Status epilepticus | 8 (0.2) |
| Undetermined | 36 (0.8) |
| Duration of follow-up (months) | 28 (13–61) |
ASM, antiseizure medication; NIHSS, National Institutes of Healthy Stroke Scale.