Preoperative perineural invasion in rectal cancer based on deep learning radiomics stacking nomogram: A retrospective study

Table 4 Delong-test results of four models (Arterial support vector machine, venous support vector machine, CT-T stage and Nomogram)

Model	Training set				Test set
Delong-test	ASVM	VSVM	CT-T stage	Nomogram	ASVM	VSVM	CT-T stage	Nomogram
ASVM	-	0.6304	1.934e-11	0.000271	-	0.6997	0.0527	0.05137
VSVM	-	-	1.737e-10	2.15e-05	-	-	0.0692	0.03611
CT-Tstage	-	-	-	2.2e-16	-	-	-	0.000305
Nomogram	-	-	-	-	-	-	-	-

ASVM: Arterial support vector machine; VSVM: Venous support vector machine; P < 0.05.