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Kaplan-Meier survival curves for the training set classified by neoplasm histologic grade, pathologic stage, and platelet qualitative. (a) Neoplasm histologic grade; (b) pathologic stage; (c) platelet qualitative. Patients of the training set are separated by neoplasm histologic grade, pathologic stage, or platelet qualitative into different subgroups, separately. OS time of different subgroups is compared and analyzed using Kaplan-Meier survival analysis.
