Table 4.

Coefficient of contingency (C value) among tumor markers

Markers				C value	P value
pre-CEA		–	+
pre-CA199	–	104	96	0.169	0.005
	+	22	46
pre-CA125	–	71	62	0.177	0.015
	+	17	34
pre-CA199		–	+
pre-CA125	–	109	27	0.230	0.001
	+	29	22
pre-CA724	–	115	25	0.205	0.002
	+	52	30
post-CEA		–	+
post-CA199	–	152	57	0.125	0.052
	+	16	13
post-CA125	–	67	20	0.185	0.014
	+	50	34
post-CA724	–	85	27	0.133	0.069
	+	45	26
post-CA199		–	+
post-CA125	–	82	5	0.130	0.089
	+	71	11
diff-CEA		–	+
diff-CA199	–	45	47	0.150	0.024
	+	44	86
diff-CA125	–	32	41	0.136	0.098
	+	22	50
diff-CA199		–	+
diff-CA125	–	40	32	0.165	0.045
	+	28	44
diff-CA724	–	36	36	0.203	0.008
	+	27	64

Only results with P ≤ 0.1 were listed