Table 1.

Patients’ baseline characteristics

	Training cohort (n = 218)				Test cohort (n = 95)		pa -value
	HE (n = 30)	NHE (n = 188)	p value	HE (n = 14)	NHE (n = 81)	p value
Age, y, mean (SD)	64.0 (9.1).	62.6 (12.0)	0.541	56.6 (8.6)	63.1 ± 11.9	0.022	0.657
Male	22 (73.3)	106 (56.4)	0.080	8 (57.1)	46 (56.8)	0.98	0.757
Medical history
Arterial hypertension	26 (86.7)	159(85)	1	11 (78.6)	69 (88.5)	0.384	0.695
Diabetes mellitus	6 (20)	31 (16.6)	0.644	3 (21.4)	15 (19.2)	1	0.597
ICH	1 (3.3)	8 (4.3)	1	2 (14.3)	3 (3.8)	0.165	0.765
Ischemic stroke	3 (10)	10 (5.3)	0.397	0	6 (7.7)	0.586	0.859
IVH	4 (13.3)	71 (37.8)	0.009	3 (21.4)	29 (35.8)	0.37	0.902
Black hole sign	5 (16.7)	10 (5.3)	0.039	4 (28.6)	2 (2.5)	0.004	0.854
Blend sign	3 (10)	5 (2.7)	0.082	3 (21.4)	3 (3.7)	0.04	0.372
Island sign	2 (6.7)	6 (3.2)	0.303	0	3 (3.7)	1	1
Satellite sign	9 (30)	29 (15.4)	0.051	2 (14.3)	16 (19.8)	1	0.748
Location			0.851			0.084	0.279
Deep	25 (83.3)	154 (81.9)		8 (57.1)	65 (80.2)
Other	55 (16.7)	34 (18.1)		6 (42.9)	16 (19.8)
Hematoma volume, ml, mean (SD)	5.3 (3.0)	5.7 (2.6)	0.431	5.8 (3.6)	6.2 (2.5)	0.637	0.204
Time from onset to CT, h, mean (SD)	2.6 (1.4)	3.1 (1.5)	0.073	2.2 (1.3)	3.2 (1.5)	0.02	0.853
Admission GCS score, median (IQR)	14 (10.5–15)	15 (14–15)	0.066	15 (11–15)	15 (12–15)	0.928	0.156
R-score, median (IQR)	−1.257 (−2.055–−0.977)	−2.088 (−2.970–−1.077)	<0.001	−1.461 (−1.810–−1.230)	2.097 (−2.824–1.388)	<0.001	1
Poor outcome	23 (76.7)	87 (46.3)	0.002	10 (71.4)	48 (59.3)	0.389	0.084

GCS, Glasgow coma scale; HE, Hematoma expansion; ICH, Intracerebral hemorrhage; IQR, Interquartile range; IVH, Intraventricular hemorrhage; NHE, Non-hematoma expansion; R-score, Radiomic score; SD, Standard deviation.

All values are presented as count (%) unless otherwise specified.

^aIndicates comparison between the training and test cohorts.