Table 1. Clinical indices and pathological data of patients stratified by the presence of pre-operative sarcopenia.

Characteristics		All Patients (n=56)	Sarcopenic (n=20)	Non-sarcopenic (n=36)	P-value
Age (yr)		68.4±11.9	67.4±12.7	70.3±10.2	0.385*
Sex					0.393†
	Male	41	16	25
	Female	15	4	11
Height (cm)		168.4±8.8	169±7.5	167±9.5	0.356*
Weight (kg)		73.8±14.8	68.3±11.6	76.9±15.7	0.036*
BMI (kg/m2)		25.9±4.3	23±2.9	27.2±4.4	0.001*
ASA-PS					0.803†
	Grade 1	5	2	3
	Grade 2	21	8	13
	Grade 3	29	10	19
	Grade 4	1	0	1
CCI					0.144†
	0	5	0	5
	1	2	1	1
	2	17	7	10
	3	11	7	4
	4	11	2	9
	5	6	2	4
	6	3	1	2
	7	1	0	1
Neoadjuvant therapy					0.610†
	Yes	28	10	18
	No	28	10	18
Type of surgery					0.087†
	Total gastrectomy	34	16	18
	Distal gastrectomy	12	2	10
	Proximal gastrectomy	10	2	8
Tumor site					0.416†
	Cardia	16	5	11
	Fundus	4	2	2
	Body	15	8	7
	Antrum	14	3	11
	Pylorus	7	2	5
Stage					0.282†
	0	7	3	4
	1A	11	3	8
	1B	7	2	5
	2A	6	1	5
	2B	7	2	5
	3A	3	0	3
	3B	9	6	3
	3C	6	3	3
Number of LNs resected (range)		28.7 (4–75)	28.3 (13–79)	29 (4–58)	0.308‡
Number of positive LNs (range)		2.2 (0–23)	2.05 (0–10)	2.33 (0–23)	0.827‡

Continuous data presented as mean±1 standard deviation unless otherwise stated. Statistically significant values in bold.

BMI = body mass index; ASA-PS = American Society of Anesthesiologists physical status; CCI = Charlson comorbidity index; Stage = overall TNM staging as per American Joint Committee on Cancer 7th edition; LN = lymph node.

^*Independent t-test, ^†χ² test ^‡Mann-Whitney U test.