Table 1 Baseline characteristics of AIS patients on all cohorts.
Characteristic | Training and internal validation set | Cohort 6 | Cohort 7 | Cohort 8 |
|---|---|---|---|---|
No. of patients | 592 | 204 | 53 | 273 |
Gender | ||||
Female | 195 (32.9) | 64 (31.4) | 13 (24.5) | 90 (33.0) |
Male | 397 (67.1) | 140 (68.6) | 40 (75.5) | 183 (67.0) |
Age* | 63 (26–96) | 64.5 (21–95) | 65 (40–84) | 68 (26–95) |
< 40y | 11 (1.9) | 8 (3.9) | 0 (0.0) | 4 (1.5) |
40-49y | 68 (11.5) | 10 (4.9) | 1 (1.9) | 22 (8.1) |
50-59y | 157 (26.5) | 53 (26.0) | 18 (34.0) | 44 (16.1) |
60-69y | 187 (31.6) | 66 (32.4) | 14 (26.4) | 83 (30.4) |
≥ 70y | 169 (28.5) | 67 (32.8) | 20 (37.7) | 120 (43.9) |
Systolic blood pressure | ||||
≥ 140mmHg | 411 (69.4) | 166 (81.4) | 36 (67.9) | 188 (68.9) |
< 140mmHg | 181 (30.6) | 38 (18.6) | 17 (32.1) | 85 (31.1) |
Diastolic blood pressure | ||||
≥ 90mmHg | 208 (35.1) | 57 (27.9) | 24 (45.3) | 90 (33.0) |
< 90mmHg | 384 (64.9) | 147 (72.1) | 29 (54.7) | 183 (67.0) |
History | ||||
Hypertension | 391 (66.0) | 137 (67.2) | 40 (75.5) | 198 (72.5) |
Dyslipidaemia | 155 (26.2) | 74 (36.3) | 19 (35.8) | 51 (18.7) |
Diabetes | 187 (31.6) | 67 (32.8) | 16 (30.2) | 109 (39.9) |
Coronary artery disease | 160 (27.0) | 44 (21.6) | 5 (9.4) | 27 (9.9) |
Smoking | 247 (41.7) | 94 (46.1) | 32 (60.4) | 89 (32.6) |
Drinking | 227 (38.3) | 96 (47.1) | 26 (49.1) | 93 (34.1) |
From onset to MRI scan | ||||
≤ 48 h | 318 (53.7) | 128 (62.7) | 24 (45.3) | 69 (25.3) |
> 48 h | 274 (46.3) | 76 (37.3) | 29 (54.7) | 204 (74.7) |
The interval from CT to MRI scan / h (median, IQR) | 29.3 (14.9, 61.6) | 22.5 (11.4, 46.5) | 21.7 (11, 33.6) | 20.4 (10.7, 28.5) |
