Table 3.
Characteristics of patients and CTA included in the final analysis
| Overall | CSC | PSC | p | |
|---|---|---|---|---|
| n (%) | 871 (100) | 431 (49.5) | 440 (50.5) | |
| Demographic characteristics | ||||
| Age, mean (SD), y | 72 (14) | 72 (15) | 73 (14) | .242* |
| Sex, n (%) | ||||
| Female | 453 (52) | 222 (51.5) | 231 (52.5) | .786† |
| Men | 418 (48) | 209 (48.5) | 209 (47.5) | |
| CTA characteristics | ||||
| Injection side, n (%) | ||||
| Right | 395 (45.4) | 193 (44.8) | 202 (45.9) | .201‡ |
| Left | 433 (49.7) | 222 (51.5) | 211 (48.0) | |
| Unknown | 43 (4.9) | 16 (3.7) | 27 (6.1) | |
| CTA starting caudal to the aortic arch | 328 (37.7) | 121 (28.1) | 207 (47) | < 0.01† |
*Mann-Whitney U test; †Fisher’s exact test, two-sided; ‡chi-quadrat nach Pearson, two-sided
CSC comprehensive stroke center; CTA computed tomography angiography; PSC primary stroke center