Table 4.

DeLong's test of a clinical model, radiomics model, and nomogram model.

Group	Model 1	Model 2	P value
Training group (2D)	Clinical	Radiomics	0.538
	Radiomics	Nomogram	0.001
	Nomogram	Clinical	0.007
Validation group (2D)	Clinical	Radiomics	0.779
	Radiomics	Nomogram	0.020
	Nomogram	Clinical	0.042
Training group (3D)	Clinical	Radiomics	0.629
	Radiomics	Nomogram	0.002
	Nomogram	Clinical	0.006
Validation group (3D)	Clinical	Radiomics	0.811
	Radiomics	Nomogram	0.010
	Nomogram	Clinical	0.039