Table 4.

Diagnostic performance of the radiomics model in the validation sample using different features of pre-treatment and post-treatment CT images.

Features used	SEN	SPE	ACC	AUC	P-value
Pre-treatment	0.571	0.667	0.625	0.603	<0.0001
Pre-treatment and delta	0.857	0.667	0.750	0.810	<0.0001
Post-treatment	0.571	0.889	0.75	0.825	0.0001
Post-treatment and delta	0.714	0.778	0.750	0.778	0.0001
Pre-treatment and post-treatment	0.571	0.889	0.75	0.841	<0.0001
Pre-treatment, post-treatment, and delta	0.857	0.778	0.813	0.857	<0.0001
Delta	0.714	0.667	0.688	0.762	<0.0001