Table 1.

Comparison of patient characteristics

		Group NE (< 70 years)		Group E (≥ 70 years)		p value
		n	%	n	%
Sex	Male	150	56.2	111	58.4	0.701
	Female	117	43.8	79	41.6
Age		58.18 ± 8.86		76.43 ± 4.35		0.001
BMI		26.2 ± 5.72		25.9 ± 4.90		0.700
ASA score	1–2	177	68.3	71	38.6	0.001
	3–4	82	31.7	113	61.4
Tumor localization (third)	Upper 1/3	51	19.1	26	16.8	0.147
	Middle 1/3	119	44.6	80	42.1
	Lower 1/3	97	36.3	84	44.2
Gastrectomy	Total	83	31.1	47	24.7	0.143
	Subtotal	184	68.9	143	75.3
Lymphanodectomy	D1	13	5.0	18	9.8	0.059
	D2	246	95.0	165	90.2
Multivisceral surgery	Yes	19	7.3	15	8.2	0.721
	No	241	92.7	168	91.8
Tumor invasion	T1a	64	24.0	35	18.4	0.217
	T1b	63	23.6	56	29.5
	T2	140	52.4	99	52.1
Lymph node metastasis	Yes	101	37.8	74	38,9	0.845
	No	166	62.2	116	61,1
N categories	N0	166	62.2	116	61.1	0.778
	N1	65	24.3	49	25.8
	N2	19	7.1	17	8.9
	N3	17	6.3	8	4.3
Distant metastasis	Yes	5	1.9	3	1.6	0.999
	No	262	98.1	187	98.4
Lauren classification	Diffuse	112	42.3	17	21.8	0.001
	Mix	31	11.7	6	8.9
	Intestinal	121	45.8	63	69.3
Tumor differentiation grade	G1	27	10.1	25	13.2	0.001
	G2	69	25.8	84	44.2
	G3	171	64.0	81	42.6
Tumor size	< 2 cm	88	34.2	56	30.6	0.471
	≥ 2 cm	169	65.8	127	69.4