. 2020 Jan 3;60(3):126–135. doi: 10.2176/nmc.oa.2019-0203

Table 3.

Relationship of reduction ratio of midline shift and hematoma thickness with various factors

Factor		No.	Reduction ratio of midline shift (1 month)		Reduction ratio of hematoma thickness (1 month)

			Mean ± SD (%)	P-value	Mean ± SD (%)	P-value
Age			(r = 0.20)	0.23	(r = −0.09)	0.45
Days from trauma to admission			(r = 0.046)	0.01	(r = −0.18)	0.24
Antithrombotic drug	+	22	71 ± 44	0.02^*	54 ± 16	0.16
Antithrombotic drug	−	48	88 ± 17	0.02^*	62 ± 23	0.16
Laterality	Unilateral	45	85 ± 16	0.54	59 ± 22	0.87
	Bilateral	25	77 ± 48	0.54	60 ± 22	0.87
Density of hematoma				0.86 (K–W test)		0.75 (K–W test)
-Low	+	15	73 ± 59	0.64	56 ± 27	0.48
-Low	−	55	85 ± 17	0.64	60 ± 21	0.48
-Iso	+	29	84 ± 16	0.39	60 ± 24	0.70
-Iso	−	41	81 ± 36	0.39	59 ± 21	0.70
-High	+	5	82 ± 28	0.78	68 ± 26	0.39
-High	−	65	82 ± 30	0.78	59 ± 21	0.39
-Varying or mixed	+	21	87 ± 16	0.71	59 ± 17	0.77
-Varying or mixed	−	49	81 ± 33	0.71	60 ± 23	0.77
Niveau	+	9	91 ± 10	0.29	56 ± 25	0.71
Niveau	−	61	82 ± 31	0.29	60 ± 22	0.71
Endoscopic findings
-Trabecula	+	53	91 ± 12	0.25	60 ± 17	0.99
-Trabecula	−	17	80 ± 32	0.25	60 ± 23	0.99
-Septum	+	27	86 ± 17	0.88	62 ± 21	0.25
-Septum	−	43	80 ± 35	0.88	58 ± 23	0.25
-Inner clot	+	32	81 ± 32	0.88	58 ± 23	0.53
-Inner clot	−	38	87 ± 21	0.88	62 ± 20	0.53
-Outer clot	+	54	82 ± 31	0.69	60 ± 22	0.46
-Outer clot	−	16	85 ± 20	0.69	56 ± 20	0.46
-Tear of arachnoid mater	+	2	90 ± 12	0.75	54 ± 30	0.73
-Tear of arachnoid mater	−	68	83 ± 29	0.75	60 ± 22	0.73
Color of inner membrane	Red	33	83 ± 18	0.29	57 ± 22	0.29
Color of inner membrane	Yellow	37	82 ± 36	0.29	62 ± 22	0.29
Color of outer membrane				0.80 (K–W test)		0.74 (K–W test)
-White	+	21	87 ± 15	0.70	58 ± 20	0.68
-White	−	49	80 ± 33	0.70	61 ± 23	0.68
-Red	+	24	85 ± 16	0.36	63 ± 22	0.44
-Red	−	46	81 ± 33	0.36	58 ± 22	0.44
-Yellow	+	25	76 ± 41	0.52	57 ± 24	0.71
-Yellow	−	45	86 ± 15	0.52	60 ± 20	0.71

P <0.05. K–W test: Kruskal–Wallis test, r: correlation coefficient, SD: standard deviation.