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Table 2 Efficacy of different models in the training group and the external validation group for predicting pathological complete response (pCR)

From: Enhanced CT-based radiomics predicts pathological complete response after neoadjuvant chemotherapy for advanced adenocarcinoma of the esophagogastric junction: a two-center study

Model Arterial model Venous model Clinical model Arterial–venous combined model Arterial–clinical combined model Venous–clinical combined model Arterial–venous–clinical combined model
Training group
AUC 0.736 0.751 0.753 0.768 0.836 0.818 0.838
95%CI 0.607–0.865 0.614–0.888 0.622–0.884 0.639–0.896 0.728–0.943 0.708–0.927 0.736–0.941
Threshold 0.510 0.856 0.351 0.667 0.332 0.543 0.160
Specificity 0.610 0.829 0.683 0.927 0.805 0.878 0.659
Sensitivity 0.789 0.632 0.789 0.474 0.789 0.632 0.895
Accuracy 0.667 0.767 0.717 0.783 0.800 0.800 0.733
NPV 0.862 0.829 0.875 0.792 0.892 0.837 0.931
PPV 0.484 0.632 0.536 0.750 0.652 0.706 0.548
External validation group
AUC 0.750 0.768 0.848 0.795 0.893 0.884 0.902
95%CI 0.535–0.965 0.489–1 0.710–0.987 0.560–1 0.780–1 0.762–1 0.792–1
Threshold 0.510 0.856 0.351 0.667 0.332 0.543 0.160
Specificity 0.536 0.750 0.857 0.857 0.786 0.893 0.500
Sensitivity 0.750 0.750 0.750 0.500 1 0.500 1
Accuracy 0.562 0.750 0.844 0.812 0.812 0.844 0.562
NPV 0.938 0.955 0.960 0.923 1 0.926 1
PPV 0.188 0.300 0.429 0.333 0.400 0.400 0.222