Table 2. Diagnostic efficacy of serum DANCR, CEA and CA199 in differentiating CRC patients from healthy control group.

Molecular marker	Sensitivity	Specificity	Curacy	Positive prediction	Negative prediction
	(%)	(%)	(%)	(%)	(%)
DANCR	67.5	82.5	75.0	79.4	71.7
	(27/40)	(33/40)	(60/80)	(27/34)	(33/46)
CEA	40.0	85.0	62.5	72.7	58.6
	(16/40)	(34/40)	(50/80)	(16/22)	(34/58)
CA199	32.5	80.0	56.2	61.9	54.2
	(13/40)	(32/40)	(45/80)	(13/21)	(32/59)
DANCR+CEA	80.0	70.0	75.0	72.7	77.7
	(32/40)	(28/40)	(60/80)	(32/44)	(28/36)
DANCR+CA199	77.5	65.0	71.3	68.9	74.3
	(31/40)	(26/40)	(57/80)	(31/45)	(26/35)
Combined detection of the three markers	87.5	55.0	71.3	66.0	81.5
	(35/40)	(22/40)	(57/80)	(35/53)	(22/27)