Fig. 2From: Clinical, radiological and molecular characterization of intramedullary astrocytomasOverall survival (OS) and event-free survival (EFS) of low-grade (LG) and high-grade (HG) intramedullary astrocytomas. Kaplan-Meier curves of OS (a, c) and EFS (b, d) for all cases (a, b) and only for resected (partial and gross total resection) cases (c, d).p-values were calculated using the log-rank testBack to article page