Serum tumor markers (carcinoembryonic antigen, carbohydrate antigen 19-9, carbohydrate antigen 72-4, carbohydrate antigen 24-2, ferritin) and gastric cancer prognosis correlation

Table 2 Relationship between indicators and staging

Group		CEA	CA199	CA24-2	CA72-4	Fer	F	P value
Phase 1	Mean value	58.17	1.49	16.74	8.31	2.66	2.14	0.10
	Number of cases	30	30	30	30	30
	Standard deviation	12.21	0.37	22.50	22.73	3.90
Phase 2	Mean value	61.00	2.55	61.07	139.01	6.09	27.00	0.00
	Number of cases	51	51	51	51	51
	Standard deviation	11.26	0.32	251.26	740.53	10.94
Phase 3	Mean value	63.00	8.00	234.47	174.40	10.13	1.95	0.12
	Number of cases	92	92	92	92	92
	Standard deviation	9.48	6.28	965.73	886.66	25.40
Phase 4	Mean value	63.96	186.44	396.25	312.73	377.09	0.83	0.48
	Number of cases	27	27	27	27	27
	Standard deviation	9.02	267.09	739.39	569.28	1748.74

CEA: Carcinoembryonic antigen; CA: Carbohydrate antigen; Fer: Ferritin.