Table 1:
Summary of baseline characteristics by AA type
| All Patients | AAA | TAA | AAA and TAA | P | |
|---|---|---|---|---|---|
| No. (%) | 1081 | 440 (40.7) | 446 (41.3) | 195 (18.0) | – |
| Mean age (yr) (SD) | 69.3 (16.2) | 77.8 (9.3) | 62.2 (17.0) | 70.8 (16.7) | <.0001 |
| Mean max AAA diameter | 49.3 (14.3) | 49.6 (14.4) | – | 48.5 (14.0) | – |
| Mean max TAA diameter | 50.2 (11.1) | – | 48.5 (9.2) | 54.5 (13.8) | – |
| Sex | |||||
| Male | 800 (74.0) | 348 (79.1) | 310 (69.5) | 142 (72.8) | .005 |
| Female | 281 (26.0) | 92 (20.9) | 136 (30.5) | 53 (27.2) | |
| Comorbidities | |||||
| Stroke/TIA | 509 (47.1) | 236 (53.6) | 163 (36.6) | 110 (56.4) | <.0001 |
| Coronary artery disease | 510 (47.3) | 278 (63.3) | 125 (28.1) | 107 (54.9) | <.0001 |
| Hypertension | 855 (79.2) | 394 (89.8) | 283 (63.5) | 178 (91.3) | <.0001 |
| Diabetes | 208 (19.3) | 119 (27.2) | 56 (12.6) | 33 (16.9) | <.0001 |
| Hyperlipidemia | 743 (68.8) | 369 (84.1) | 228 (51.1) | 146 (74.9) | <.0001 |
| Current/former smoker | 356 (33.0) | 214 (48.8) | 68 (15.3) | 74 (38.0) | <.0001 |
| Bicuspid aortic valve | 142 (13.1) | 3 (0.7) | 132 (29.6) | 7 (3.6) | <.0001 |
| Imaging | |||||
| MRA | 903 (83.5) | 373 (84.8) | 369 (82.7) | 161 (82.6) | .66 |
| CTA | 249 (23.0) | 94 (21.4) | 104 (23.3) | 51 (26.2) | .52 |
| DSA | 114 (10.5) | 55 (12.5) | 40 (9.0) | 19 (9.7) | .34 |
| No. (%) with intracranial aneurysms | 128 (11.8) | 56 (12.7) | 48 (10.8) | 24 (12.3) | .44 |
| No. of aneurysms | 172 | 70 | 65 | 37 | – |
| No. (%) of patients with multiple aneurysms | 30 (23.4) | 14 (25.0) | 10 (15.4) | 6 (25.0) | .34 |
| Mean size | 6.0 (5.8) | 5.4 (4.4) | 6.3 (6.5) | 7.1 (7.2) | .54 |
| Location | |||||
| ICA | 93 (54.1) | 36 (51.4) | 34 (52.3) | 23 (62.2) | .67 |
| ACA | 16 (9.3) | 7 (10.0) | 7 (10.8) | 2 (5.4) | |
| AcomA | 16 (9.3) | 5 (7.1) | 8 (12.3) | 3 (8.1) | |
| MCA | 24 (14.0) | 12 (17.1) | 7 (10.8) | 5 (13.5) | |
| Basilar artery | 13 (7.6) | 8 (11.4) | 3 (4.6) | 2 (5.4) | |
| PICA | 5 (2.9) | 1 (1.4) | 2 (3.1) | 2 (2.7) | |
| PCA | 4 (2.3) | 1 (1.4) | 3 (4.6) | 0 (0.0) | |
| Vertebral artery | 2 (1.2) | 0 (0.0) | 1 (1.5) | 1 (2.7) | |
| Location by anterior/posterior | |||||
| Anterior | 148 (86.0) | 60 (83.3) | 56 (86.2) | 32 (86.5) | .99 |
| Posterior | 24 (14.0) | 10 (16.7) | 9 (13.8) | 5 (13.5) |
Note:—Max indicates maximum; ACA, anterior cerebral artery; AcomA, anterior communicating artery; PICA, posterior inferior cerebellar artery; PCA, posterior cerebral artery.