Relationship between Clinicopathologic Variables in Breast Cancer Overall Survival Using Biogeography-Based Optimization Algorithm

Figure 2

Kaplan–Meier curve of BBO-selected clinicopathologic variables including (a) tumor size, (b) lymph node status, (c) lymphovascular invasion status, (d) dermal invasion status, (e) perineural invasion status, (f) surgical methods, (g) chemotherapy status, and (h) hormone therapy status.

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