Characteristics of the stenoses
| Characteristic | Procedures | P Value* | |||
|---|---|---|---|---|---|
| All (n = 70) | With Positive DW Findings (n = 50) | With Negative DW Findings (n = 20) | |||
| Symptoms | |||||
| Present | 52 (75) | 38 (76) | 14 (70) | .763 | |
| Present in the last 3 mo | 42 (60) | 30 (60) | 12 (60) | >.99 | |
| Absent | 18 (25) | 12 (24) | 6 (30) | .763 | |
| Cause | .408 | ||||
| Atherosclerotic | 63 (90) | 45 (90) | 18 (90) | NA | |
| Surgery | 6 (9) | 5 (10) | 1 (5) | NA | |
| Irradiation | 1 (1) | 0 (0) | 1 (5) | NA | |
| Side | .285 | ||||
| Right | 40 (57) | 31 (62) | 9 (45) | NA | |
| Left | 30 (43) | 19 (38) | 11 (55) | NA | |
| Grade (%)† | 84 ± 7.9 (60–98) | 83 ± 7.3 (60–98) | 86 ± 9.3 (62–98) | .131 | |
| Classification | .493 | ||||
| 0–29% | 0 (0) | 0 (0) | 0 (0) | NA | |
| 30–69% | 2 (3) | 1 (2) | 1 (5) | NA | |
| 70–99% | 68 (97) | 49 (98) | 19 (95) | NA | |
| Location | .182 | ||||
| ICA at bifurcation | 35 (50) | 24 (48) | 11 (55) | NA | |
| Proximal ICA | 32 (46) | 25 (50) | 7 (35) | NA | |
| CCA | 3 (4) | 1 (2) | 2 (10) | NA | |
| Length | .259 | ||||
| <1 cm | 47 (67) | 36 (72) | 11 (55) | NA | |
| >1 cm | 23 (33) | 14 (28) | 9 (45) | NA | |
| Morphology | .796 | ||||
| Eccentric | 37 (53) | 27 (54) | 10 (50) | NA | |
| Concentric | 33 (47) | 23 (46) | 10 (50) | NA | |
| Ulcerations | 17 (24) | 14 (28) | 3 (15) | .359 | |
| Contralateral ICA occlusion | 6 (9) | 5 (10) | 1 (5) | .666 | |
Note.—Data in parentheses are percentages, unless otherwise specified.
* NA indicates not applicable.
† Data are the mean ± SD. Data in parentheses are the range.