Comparison of baseline characteristics of basilar artery occlusion patients according to the meniscus sign
| All patients n=89 | Meniscus (+) n=56 | Meniscus (−) n=33 | P value | |
| Age (mean) (range) | 72.3 (20–90) | 71.9 (32–89) | 72.9 (20–90) | 0.813 |
| Male age (mean) (range) | 70.4 (20–90) | 71.6 (43–89) | 68.4 (20–90) | 0.551 |
| Female age (mean) (range) | 74.7 (32–90) | 72.4 (32–88) | 78.4 (61–90) | 0.081 |
| Male | 50 (56.2) | 32 (57.1) | 18 (54.5) | 0.811 |
| Hypertension | 63 (70.8) | 39 (69.6) | 24 (72.7) | 0.757 |
| Hypercholesterolemia | 9 (10.1) | 6 (10.7) | 3 (9.1) | >0.999 |
| Diabetes | 27 (30.3) | 20 (35.7) | 7 (21.2) | 0.151 |
| Smoking | 21 (23.6) | 13 (23.2) | 8 (24.2) | 0.912 |
| Atrial fibrillation | 32 (36.0) | 24 (42.9) | 8 (24.2) | 0.077 |
| Coronary artery disease | 18 (20.2) | 12 (21.4) | 6 (18.2) | 0.713 |
| IV tPA | 21 (23.6) | 15 (26.8) | 6 (18.2) | 0.356 |
| Admission NIHSS* | 13 (7–23) | 12 (7–24) | 15 (8–22) | 0.388 |
| Occlusion site | <0.001 | |||
| Proximal | 17 (19.1) | 4 (7.1) | 13 (39.4) | <0.001 |
| Middle | 33 (37.1) | 19 (33.9) | 14 (42.4) | 0.423 |
| Distal | 39 (43.8) | 33 (58.9) | 6 (18.2) | <0.001 |
| Calcification on CTA | 33 (37.1) | 16 (28.6) | 17 (51.5) | 0.030 |
| PcomA on CTA | 53 (59.6) | 36 (54.5) | 17 (73.9) | 0.140 |
Values in parentheses represent the number of patients (%). *Data are median and numbers in parentheses are IQR.
CTA, CT angiography; IV tPA, intravenous tissue-type plasminogen activator; NIHSS, National Institutes of Health Stroke Scale; PcomA, posterior communicating artery.