Table 2.

Characteristics of the study cohort.

Categories	Variables	n (%)
Location of spinal metastasis	Cervical	16 (18.8%)
	Cervicothoracic	7 (8.2%)
	Thoracic	41 (48.2%)
	Thoracolumbar	3 (3.5%)
	Lumbar	18 (21.2%)
Chronicity of spinal metastasis	Synchronous	58 (68.2%)
	Metachronous	27 (31.8%)
EGFR mutation	Positive	38 (44.7%)
	Negative	47 (55.3%)
Ambulatory status	Independent ambulator	62 (72.9%)
	Dependent ambulator/non-ambulator	23 (27.1%)
Serum albumin	≥3.5 g/dL	67 (78.8%)
	<3.5 g/dL	18 (21.2%)
NESMS	0	8 (9.4%)
	1	25 (29.4%)
	2	52 (61.2%)