Research Paper Volume 12, Issue 16 pp 16046—16061
Pan-metastatic cancer analysis of prognostic factors and a prognosis-based metastatic cancer classification system
Figure 5. Flow chart of the patient selection procedure in the construction and validation cohort. Metastatic cancer patients who were diagnosed between 2010 and 2014 were included as the construction cohort, which was used to construct the metastatic cancer categories, and those who were diagnosed between 2005 and 2009 were included in the validation cohort, which was used to test the predictive accuracy of this classification system.