Evaluation of the value of combined detection of tumor markers CA724, carcinoembryonic antigen, CA242, and CA19-9 in gastric cancer

Table 3 Difference in findings (%)

Groups	Sensitivity	Specificity	Accuracy	Positive predictive value	Negative predictive value
CA724	76.25	82.50	79.37	81.33	77.65
CA19-9	76.25	78.75	77.50	78.21	76.83
CA242	86.25	82.50	84.38	83.13	85.71
CEA	86.25	77.50	76.88	77.22	76.54
Combined detection	98.75	97.50	98.13	97.53	98.73
F	16.38	18.24	16.37	19.63	17.04
P value	< 0.001	< 0.001	< 0.001	< 0.001	< 0.001

CEA: Carcinoembryonic antigen.