Table 1.

Baseline characteristics of group A (ESCCS 0,1,2) and group B (ESCCS 3).

Characteristic		Group A (n=34)	Group B (n=22)	P value
Age at surgery, mean (SD), years		69.9 (8.1)	63.4 (15.1)	0.07
Sex, n (%)	Male	11 (32.4)	2 (9.1)	0.04
	Female	23 (67.6)	20 (90.9)
Metastatic tumor diagnosis, n (%)	Lung	10 (29.4)	2 (13.6)	0.23
	Prostate	2 (5.9)	5 (22.7)
	Liver	5 (14.7)	5 (22.7)
	Gastric	1 (2.9)	2 (9.1)
	Kidney	4 (11.8)	0
	Breast	0	2 (9.1)
	Thyroid	2 (5.9)	1 (4.5)
	Others	9 (26.4)	5 (22.7)
	Unknown	1 (8.3)	0
Main spinal level of compression, n (%)	Thoracic	15 (44.1)	7 (31.8)	0.35
	Lumbar	19 (55.9)	15 (68.2)
Preoperative ASIA classification, n (%)	A	0	1 (4.5)	0.49
	B	1 (2.9)	1 (4.5)
	C	6 (17.6)	6 (27.3)
	D	20 (58.8)	12 (54.5)
	E	7 (20.6)	2 (9.1)
Revised Tokuhashi score, n (%)	0-8	26 (76.5)	16 (72.7)	0.92
	9-11	7 (20.6)	5 (22.7)
	12-15	1 (2.9)	1 (4.5)
Spinal instability neoplastic score, n (%)	0-6	3 (8.8)	1 (4.5)	0.28
	7-12	30 (88.2)	18 (81.8)
	13-18	1 (2.9)	3 (13.6)
Epidural spinal cord compression scale, n (%)	0	3 (8.8)	0	<0.001
	1a	4 (11.8)	0
	1b	1 (2.9)	0
	1c	3 (8.8)	0
	2	23 (67.6)	0
	3	0	22 (100)
Preoperative visual analogue scale, mean (SD)		5.5 (2.1)	6.1 (2.3)	0.35
Preoperative Barthel index, mean (SD)		67.7 (30.8)	50.0 (38.3)	0.07
ASA physical status classification, n (%)	1	2 (5.9)	2 (9.1)	0.76
	2	27 (79.4)	18 (81.8)
	3	5 (14.7)	2 (9.1)
Type of surgery, n (%)	Scheduled	32 (94.1)	19 (86.4)	0.40
	Urgent	2 (5.9)	1 (4.5)
	Emergency	0	2 (9.1)

ASIA, American Spinal Injury Association; ASA, American Society of Anesthesiologists.