Table 1.
Characteristics of included studies.
| Study characteristics | Smith et al. (11) | van Seeters et al. (13) |
|---|---|---|
| Study enrollment | 2006–2009 | 2009–2013 |
| Region | United States, East and West Coast | Netherlands |
| Recruitment sites | 2 University hospitals | 6 Universities, 8 non-University hospitals |
| Study type | Prospective cohort | Prospective cohort |
| Cerebral ischemia type | AIS + TIA | AIS |
| Sample size | 643/675a | 824 |
| Age, mean (SD) | 68.6 ± 15.3 | 67.7 ± 14.1 |
| Sex, female | 48% | 41% |
| NIHSS, mean (SD) | 7.63 (±7.29) | 7 (3–13)b |
| Vessel imaging modality | CTA | CTA |
| Study entry time window | <24 h of onset | <9 h of onset |
| Time from onset to vessel imaging | NR | 118 min (median) (IQR 74–189) |
| Segments abstracted as large-vessel occlusions for this analysis | Supraclinoid ICA, M1, M2, BA, intracranial VA | Intracranial ICA, M1, P1, or BA |
| Timing of outcome modified Rankin scale assessment | 180 days | 90 days |
AIS, Acute ischemic stroke; CTA, Computed tomography angiography; NR, not reported; ICA, internal carotid artery; MCA: middle cerebral artery; PCA, posterior cerebral artery; M1, first MCA segment; M2, second MCA segment; VA, vertebral artery; BA; basilar artery; IQR; inter-quartile range.
aStudy reported intracranial vessel imaging in 643/675 (95.2%) patients. Age, sex, and NIHSS data in this table are for the 675 patients; data in other tables are for the 643 with intracranial vessel imaging.
bStudy reported NIHSS as median (IQR), while mean (SD) was not reported.