Table 3.
ICAS Characteristics of Patients with and without LA.
| Total (n=2420) |
Without LA (n=1522) |
With LA (n=898) |
p value | |
|---|---|---|---|---|
| ICAS | 1155 (47.73) | 675 (44.35) | 480 (53.45) | <0.0001 |
| Distribution of stenosis | 0.0002 | |||
| None | 1146 (47.36) | 765 (50.26) | 381 (42.43) | |
| Intracranial only | 930 (38.43) | 549 (36.07) | 381 (42.43) | |
| Extracranial only | 119 (4.92) | 82 (5.39) | 37 (4.12) | |
| Intracranial and extracranial | 225 (9.30) | 126 (8.28) | 99 (11.02) | |
| Multiple ICAS* | 517 (21.36) | 283 (18.59) | 234 (26.06) | <0.0001 |
| Severity of ICAS† | 0.0007 | |||
| None or <50% | 1265 (52.27) | 847 (55.65) | 418 (46.55) | |
| 50% to 69% | 290 (11.98) | 163 (10.71) | 127 (14.14) | |
| 70% to 99% | 218 (9.01) | 129 (8.48) | 89 (9.91) | |
| 100% | 647 (26.74) | 383 (25.16) | 264 (29.40) | |
| Distribution of ICAS‡ | <0.0001 | |||
| None | 1265 (52.27) | 847 (55.65) | 418 (46.55) | |
| Anterior | 569 (23.51) | 376 (24.70) | 193 (21.49) | |
| Posterior | 289 (11.94) | 156 (10.25) | 133 (14.81) | |
| Anterior and posterior | 297 (12.27) | 143 (9.40) | 154 (17.15) |
Values are expressed as n (%). ICAS indicates intracranial atherosclerosis; LA, leukoaraiosis.