Validation of serum tumor biomarkers in predicting advanced cystic mucinous neoplasm of the pancreas

Table 3 Receiver operating characteristic curve comparison analyses of each serum tumor marker

ROC curve	ΔAUC1	Standard error	Z statistic	P value
CA19-9 vs CEA	0.115	0.038 and 0.042	2.03	0.04
CA19-9 vs CA125	0.183	0.038 and 0.051	2.88	0.004
CA19-9 vs CA724	0.148	0.038 and 0.058	2.14	0.03
CA19-9 vs CA242	0.008	0.038 and 0.090	0.08	0.81
CEA vs CA125	0.068	0.042 and 0.051	1.03	0.30
CEA vs CA724	0.033	0.042 and 0.058	0.46	0.62
CA125 vs CA724	0.035	0.051 and 0.058	0.45	0.63

¹ΔAUC: The gap between the two areas under the curves. CA: Carbohydrate antigen; CEA: Carcinoembryonic antigen; ROC: Receiver operating characteristic; AUC: Area under curve.