Diagnostic and economic value of carcinoembryonic antigen, carbohydrate antigen 19-9, and carbohydrate antigen 72-4 in gastrointestinal cancers

Table 7 The biomarker levels and categorical regression analysis of each stage of gastric cancer and colorectal cancer

		Gastric cancer		Colorectal cancer
		Median (quartile)	Quatization	Median (quartile)	Quatization
CEA (μg/L)	CIS	1.74 (1.45, 2.18)	-0.983	2.04 (1.17, 2.32)	-1.695
	Stage I	1.78 (1.29, 2.79)	-0.983	2.30 (1.45, 4.10)	-1.252
	Stage II	2.16 (1.07, 4.03)	-0.835	3.42 (2.13, 9.26)	-0.680
	Stage III	2.37 (1.31, 5.78)	-0.176	3.28 (2.00, 8.21)	-0.680
	Stage IV	3.79 (1.76, 29.1)	1.346	10.1 (2.57, 57.4)	1.168
CA19-9 (kU/L)	CIS	8.60 (5.05, 12.7)	-1.138	8.66 (6.18, 13.2)	-0.963
	Stage I	9.25 (5.88, 14.4)	-1.138	9.50 (6.20, 14.1)	-0.963
	Stage II	7.73 (5.53, 16.8)	-1.138	12.4 (7.38, 28.8)	-0.812
	Stage III	12.2 (5.63, 37.7)	0.842	13.1 (7.33, 23.0)	-0.790
	Stage IV	11.8 (5.08, 28.7)	0.903	28.9 (10.5, 216.4)	1.192
CA72-4 (kU/L)	CIS	1.50 (0.90, 3.50)	-1.203	1.50 (1.00, 2.03)	-1.550
	Stage I	1.80 (1.20, 4.33)	-0.977	1.70 (1.10, 3.20)	-1.060
	Stage II	1.90 (1.18, 4.30)	-0.789	2.10 (1.20, 3.81)	-0.818
	Stage III	2.10 (1.30, 4.63)	-0.164	1.95 (1.10, 4.21)	-0.679
	Stage IV	4.10 (1.00, 12.0)	1.340	4.75 (1.50, 15.2)	1.182

CEA: Carcinoembryonic antigen; CA19-9: Carbohydrate antigen 19-9; CA72-4: Carbohydrate antigen 72-4; CIS: Carcinoma in situ.