Baseline characteristics
| Variable | All (n = 38 Procedures in 36 Patients) | Group A (n = 24 Procedures in 22 Patients) | Group B (n = 14 Procedures in 14 Patients) | P Value (Group A vs Group B) |
|---|---|---|---|---|
| Age (mean ± SD) | 58 ± 12 | 60 ± 12 | 55 ± 12 | .26 |
| Men, n (%) | 28/36 (78) | 16/22 (73) | 12/14 (86) | .44 |
| Known risk factors, n (%) | ||||
| Arterial HTN | 34/36 (94) | 22/22 (100) | 12/14 (86) | .14 |
| Hypercholesterolemia | 25/36 (69) | 16/22 (73) | 9/14 (64) | .72 |
| Diabetes | 14/36 (39) | 8/22 (36) | 6/14 (43) | .74 |
| Coronary artery disease | 8/36 (22) | 8/22 (36) | 0/14 (0) | .01 |
| Smoking (any time) | 6/36 (17) | 2/22 (9) | 4/14 (29) | .18 |
| Peripheral vascular disease | 3/36 (8) | 3/22 (14) | 0/14 (0) | .27 |
| Degree of stenosis ( mean ± SD) | 80 ± 14 | 82 ± 14 | 77 ± 13 | .37 |
| Location of stenosis, n (%) | .175 | |||
| Anterior circulation | 24/38 (63) | 13/24 (54) | 11/14 (79) | |
| Posterior circulation | 14/38 (37) | 11/24 (46) | 3/14 (21) | |
| Qualifying event, n (%) | .50 | |||
| TIA | 14/38 | 10/24 (42) | 4/14 (29) | |
| Ischemic stroke | 24/38 | 14/24 (58) | 10/14 (71) | |
| Time since event (days), median (range) | 9.5 (0–201) | 9 (0–117) | 24 (0–201) | .19 |
| Acute intervention, n (%) | 8/38 (21) | 5/24 (21) | 3/14 (21) | 1.00 |
Note:—SD indicates standard deviation; HTN, hypertension; TIA, transient ischemic attack.