Table 1.
Overview of the baseline characteristics of the eight cohorts.
| Internal cohort 1, n = 1177 | Internal cohort 2, n = 245 | Internal cohort 3, n = 226 | Internal cohort 4, n = 374 | Internal cohort 5, n = 333 | NBH cohort, n = 211 | TJ cohort, n = 147 | LYG cohort, n = 316 | |
|---|---|---|---|---|---|---|---|---|
| Patients with IAs, n (%) | 869 (73.8) | 108 (44.1) | 61 (27.0) | 53 (14.2) | 14 (4.2) | 39 (18.5) | 109 (74.1) | 60 (19.0) |
| Number of IAs, n | 1099 | 145 | 80 | 71 | 16 | 46 | 141 | 76 |
| Patients without IAs, n (%) | 308 (26.2) | 137 (55.9) | 165 (73.0) | 321 (85.8) | 319 (95.8) | 172 (81.5) | 38 (25.9) | 256 (81.0) |
| Male sex, n (%) | 311 (28.3) | 136 (55.5) | 134 (59.3) | 242 (64.7) | 224 (67.3) | 145 (68.7) | 71 (48.3) | 187 (59.2) |
| SAH, n (%) | 931 (79.1) | 108 (44.1) | 69 (30.5) | 28 (7.5) | 0 | 5 (2.4) | 64 (43.5) | 47 (14.9) |
| Number of patients with IAs, n (%) | 760 (81.6) | 87 (80.6) | 44 (63.8) | 10 (35.7) | 0 | 2 (40.0) | 62 (96.9) | 25 (53.2) |
| Non-SAH (IA %) | 246 (20.9) | 137 (54.9) | 157 (69.5) | 346 (92.5) | 333 (100) | 206 (97.6) | 83 (56.5) | 269 (85.1) |
| Number of patients with IAs, n (%) | 109 (44.3) | 24 (17.5) | 17 (10.8) | 43 (12.4) | 14 (4.2) | 37 (18.0) | 47 (56.6) | 35 (13.0) |
| age, years | 54 (46,62) | 59 (48,66) | 59 ± 13 | 63.0 (50.0,70.0) | 66 (57,77) | 64 (56,71) | 60 ± 13 | 65.5 (52.5,73.0) |
| age <70 years, n (%) | 1088 (92.4) | 209 (85.3) | 173 (76.5) | 273 (73.0) | 198 (59.5) | 150 (71.1) | 106 (72.1) | 223 (70.6) |
| Location | ||||||||
| MCA, n (%) | 131 (11.9) | 25 (16.9) | 8 (10.0) | 13 (18.3) | 6 (37.5) | 3 (6.5) | 26 (18.4) | 13 (17.1) |
| ACoA, n (%) | 291 (26.5) | 29 (19.6) | 20 (25.0) | 8 (11.3) | 1 (6.3) | 5 (10.9) | 29 (20.6) | 10 (13.2) |
| ICA, n (%) | 207 (18.8) | 34 (23.0) | 19 (23.8) | 15 (21.1) | 5 (31.3) | 21 (45.7) | 27 (19.1) | 19 (25.0) |
| PCoA, n (%) | 322 (29.3) | 33 (22.3) | 25 (31.3) | 19 (26.8) | 3 (18.8) | 5 (10.9) | 23 (16.3) | 19 (25.0) |
| VBA, n (%) | 40 (3.6) | 7 (4.7) | 0 | 9 (12.7) | 1 (6.3) | 8 (17.4) | 23 (16.3) | 7 (9.2) |
| CA, n (%) | 43 (3.9) | 6 (4.1) | 2 (2.5) | 3 (4.2) | 0 | 0 | 2 (1.4) | 1 (1.3) |
| ACA, n (%) | 41 (3.7) | 11 (7.4) | 5 (6.3) | 4 (5.6) | 0 | 3 (6.5) | 6 (4.3) | 5 (6.6) |
| PCA, n (%) | 24 (2.3) | 3 (2.0) | 1 (1.3) | 0 (0) | 0 | 1 (2.2) | 5 (3.5) | 2 (2.6) |
| Size | ||||||||
| <3, n (%) | 204 (18.6) | 32 (21.6) | 22 (27.5) | 22 (31.0) | 0 | 8 (17.4) | 18 (12.8) | 18 (23.7) |
| ≥3, <5, n (%) | 426 (38.8) | 46 (31.1) | 35 (43.8) | 25 (35.2) | 7 (43.8) | 17 (37.0) | 48 (34.0) | 30 (39.5) |
| ≥5, <10, n (%) | 401 (36.5) | 65 (43.9) | 18 (22.5) | 16 (22.5) | 6 (37.5) | 18 (39.1) | 64 (45.4) | 21 (27.6) |
| ≥10, n (%) | 68 (6.1) | 5 (3.4) | 5 (6.3) | 8 (11.3) | 3 (18.8) | 3 (6.5) | 11 (7.8) | 7 (9.2) |
| Size, mm | 4.3 (3.0,6.0) | 4.8 (3.3,6.3) | 4.2 (2.8,5.1) | 3.5 (2.9,6.5) | 5.1 (3.7,7.8) | 4.4 (3.4,6.7) | 5.3 (3.6,7.2) | 4.4 (3.2,6.2) |
ACA anterior cerebral artery, ACoA anterior communication artery, CA cerebellar artery, IA intracranial aneurysm, ICA internal carotid artery, MCA middle cerebral artery, PCA posterior cerebral artery, PCoA posterior communication artery, SAH subarachnoid hemorrhage, VBA vertebral basilar artery.