Table 1. Patients' characteristics.

		number	%
Sex	Male	125	65.8
	Female	65	34.2
Age	Median	55 years
	Range	(24–79 years)
ECOG performance status	0,1	186	97.9
	2	4	2.1
Lauren classification	Intestinal	26	13.7
	Diffuse	41	21.6
	Mixed	18	9.5
	Unknown	105	55.3
Initial stage	1	8	4.2
	2	28	14.7
	3	41	21.6
	4	113	59.5
Operation	+	127	66.8
	–	63	33.2
Adjuvant therapy	+	79	41.6
	–	111	58.4
No. of metastasis	1	106	55.8
	2	54	28.4
	> 3	30	15.8
CEA	< 5 ng/ml	119	62.6
	≥ 5 ng/ml	54	28.4
	Unchecked	17	8.9

CEA, carcinoembryonic antigen; ECOG, eastern cooperative oncology group.