The results showed that the five variables, lymphatic metastasis (p = 0.0095), international standardized ratio (p = 0.024), prothrombin time (p = 0.0036), tumor differentiation (p = 0.0026), and the number of tumor metastases (p = 0.00095), were all significantly correlated with survival status (Figure 6). Here, F2 is linked to neoplasm.