Prognostic value of 18F-FDG PET/CT-based radiomics combining dosiomics and dose volume histogram for head and neck cancer

EJNMMI Research

Table 2 Results for each group of studies

Model	12 versus 34		13 versus 24		23 versus 14
Model	Training	Validation	Training	Validation	Training	Validation
PET
C-index	0.811	0.781	0.811	0.761	0.802	0.79
Standard error	0.045	0.054	0.053	0.048	0.05	0.066
CT
C-index	0.811	0.787	0.634	0.668	0.737	0.71
Standard error	0.053	0.06	0.094	0.059	0.06	0.066
PET+CT
C-index	0.859	0.846	0.814	0.762	0.795	0.815
Standard error	0.044	0.041	0.049	0.048	0.044	0.068
Dose
C-index	0.787	0.749	0.722	0.685	0.682	0.623
Standard error	0.049	0.06	0.098	0.055	0.07	0.066
PET+dose
C-index	0.868	0.824	0.817	0.756	0.808	0.777
Standard error	0.028	0.045	0.049	0.05	0.038	0.052
CT+Dose
C-index	0.818	0.807	0.671	0.643	0.768	0.804
Standard error	0.051	0.04	0.099	0.064	0.064	0.051
PET+CT+Dose
C-index	0.875	0.873	0.819	0.759	0.817	0.835
Standard error	0.037	0.031	0.049	0.049	0.047	0.046