Comparison of dynamic contrast-enhanced-magnetic resonance imaging parameters and serum markers in preoperative rectal cancer evaluation: Combined diagnostic value

Table 5 DeLong test results for the area under the curve of dynamic contrast-enhanced magnetic resonance imaging metrics and tumor biomarkers in differentiating T staging and degree of differentiation

Inspection results	Z-score	Significance level	AUC	Mean error	95%CI
T installment
CA19-9 and CA125 serum biomarkers	0.862	0.389	0.014	0.016	-0.018 to 0.046
CA19-9 alongside DCE-MRI measurements and cancer markers	4.253	< 0.05	0.111	0.026	0.060 to 0.162
CA125 in conjunction with DCE-MRI parameters and tumor markers	4.682	< 0.05	0.125	0.027	0.072 to 0.178
Degree of differentiation
CA19-9 and CA125 serum biomarkers	0.923	0.356	0.018	0.020	-0.021 to 0.057
CA19-9 alongside DCE-MRI measurements and cancer markers	4.132	< 0.05	0.109	0.026	0.058 to 0.160
CA125 in conjunction with DCE-MRI parameters and tumor markers	4.521	< 0.05	0.127	0.028	0.072 to 0.182

DCE-MRI: Dynamic contrast-enhanced magnetic resonance imaging; CA: Carbohydrate antigen; AUC: Area under the curve; CI: Confidence interval.