Table 1.

Patient demographic and clinical characteristics

Factors	All (n=880)a	Nonsarcopenic (n=713)a	Sarcopenic (n=167)a	P
Age, mean (SD), years	64.47 (10.80)	62.35 (10.35)	73.54 (7.50)	<0.001*
Gender				0.645
Female	230	184	46
Male	650	529	121
BMI, mean (SD), kg/m2	22.63 (3.07)	22.91 (3.04)	21.48 (2.96)	<0.001*
NRS-2002 scores				<0.001*
< 3	570	496	74
≥ 3	310	217	93
MUST scores				<0.001*
< 1	487	419	68
≥ 1	393	294	99
MST scores				0.003*
< 2	617	516	101
≥ 2	263	197	66
SNAQ scores				0.005*
< 2	701	581	120
≥ 2	179	132	47
L3 SMI, mean (SD), cm2/m2	42.73 (7.74)	43.86 (7.60)	37.89 (6.41)	<0.001*
Muscle attenuation,mean (SD), HU	36.12 (7.81)	37.43 (7.39)	30.54 (7.10)	<0.001*
Handgrip strength,mean (SD), kg	28.40 (9.22)	30.84 (8.21)	18.11 (5.25)	<0.001*
Gait speed,median (IQR), m/s	1.00 (0.27)	1.03 (0.25)	0.81 (0.28)	<0.001*
Albumin, mean (SD), g/L	38.11 (4.45)	38.71 (4.16)	35.51 (4.74)	<0.001*
Hemoglobin,mean (SD), g/L	120.97 (21.61)	123.52 (21.16)	110.08 (20.15)	<0.001*
ASA grade				<0.001*
I	208	183	25
II	522	426	96
III	150	104	46
Charlson comorbidity index				0.088
0	622	513	109
1	174	139	35
≥ 2	84	61	23
Previous abdominal surgery				0.145
No	777	635	142
Yes	103	78	25
Tumor location				0.579
Not at cardia	765	622	143
At cardia	115	91	24
Differentiation of tumor				0.505
Well differentiated	304	250	54
Poorly differentiated	576	463	113
TNM stage				0.001*
I	310	272	38
II	214	167	47
III	356	274	82
Extent of lymph node dissection				0.219
D1	115	98	17
D2	765	615	150
Type of resection				0.103
Subtotal gastrectomy	549	454	95
Total gastrectomy	331	259	72
Combined resection				0.069
No	810	662	148
Yes	70	51	19
Laparoscopy-assisted surgery				0.001*
No	644	504	140
Yes	236	209	27

a:Values are number of patients unless indicated otherwise;

*Statistically significant;

SD, standard deviation; BMI, body mass index; L3 SMI, third lumbar vertebra skeletal muscle index; IQR, interquartile range; ASA, American Society of Anesthesiologists; TNM, tumor-node-metastasis.