fig4

Figure 4. Box plot for CT and clinical data demonstrating comparison between SSL and SL; SSL significantly outperformed SL for CF, while improvements for CT_DRF and CT_HRF were modest. CT_DRF: Deep radiomics features extracted from CT; CT_HRF: handcrafted radiomics features extracted from CT; CF: clinical features; SL: supervised learning; SSL: semi-supervised learning; MAE: mean absolute error, P: P-value; DRFs: deep radiomics features; CT: computed tomography.