Table 3.

Diagnostic efficacy of serum CA724, DKK1, TK1, and combined detection in GC.

Diagnosis methods	Specificity	Sensitivity	Area under curve	Positive predictive value	Negative prediction value	Asymptotic 95% confidence interval
CA724	80.00%	89.47%	0.849	80.95%	88.89%	0.774-0.924
DKK1	71.19%	79.31%	0.754	73.02%	77.78%	0.663-0.845
TK1	64.41%	72.41%	0.685	66.67%	70.37%	0.587-0.783
Combined detection	90.91%	93.55%	0.923	92.06%	92.59%	0.867-0.979