Table 2.
Comparison of radiological characteristics between the HE group and the non-HE group in the training and testing sets.
| Training set (n = 145) | Testing set (n = 37) | p-value | |||||
|---|---|---|---|---|---|---|---|
| HE (n = 53) | non-HE (n = 92) | p- value | HE (n = 14) | non-HE (n = 23) | p- value | ||
| Location (deep/lobe) | 34/19 | 65/27 | 0.418# | 5/9 | 17/6 | 0.038 # | 0.311# |
| Intraventricular hemorrhage extension | 11 (20.8) | 16 (17.4) | 0.616# | 4 (28.6) | 4 (17.4) | 0.445# | 0.679# |
| Initial volume (mL) | 42.6 ± 25.7 | 26.6 ± 16.1 | <0.001* | 45.9 ± 22.1 | 31.1 ± 20.8 | 0.048 * | 0.245* |
| Shape, irregular | 30 (56.6) | 33 (35.9) | 0.015 # | 8 (57.1) | 9 (39.1) | 0.328# | 0.785# |
| Swirl sign | 21 (39.6) | 22 (23.9) | 0.046 # | 5 (35.7) | 2 (8.7) | 0.080# | 0.192# |
| Blend sign | 18 (34.0) | 13 (14.1) | 0.005 # | 6 (42.9) | 2 (8.7) | 0.035 # | 0.974# |
| Black hole sign | 6 (11.3) | 4 (4.3) | 0.209# | 3 (21.4) | 1 (4.3) | 0.142# | 0.651# |
| Island sign | 10 (18.9) | 7 (7.6) | 0.042 # | 4 (28.6) | 2 (8.7) | 0.173# | 0.648# |
| CTA spot sign | 28 (52.8) | 7 (7.6) | <0.001# | 8 (57.1) | 3 (13.0) | 0.008 # | 0.485# |
#Chi-squared test, with percentages in parentheses. *Independent samples t-test or Mann–Whitney U test; data reported are the mean ± standard deviation. Boldface test statistical significance. CTA, computed tomography angiography; HE, hematoma expansion.