Fig. 3

A Kaplan-Meier estimates of the local recurrence-free survival (RFS) curves in intracranial hemangiopericytoma patients. Postoperative radiotherapy (PORT) did not increase the RFS (p = 0.714). B Kaplan-Meier estimates of the local RFS curves in intracranial hemangiopericytoma patients with PORT. The RFS of the two groups with different radiotherapy techniques were similar (p = 0.960). C Kaplan-Meier estimates of the overall survival (OS) curves of intracranial hemangiopericytoma patients. There were no differences between the patients with and without PORT (p = 0.169). D Kaplan-Meier estimates of the OS curves in intracranial hemangiopericytoma patients with PORT. The OS of the two groups were similar (p = 0.256). E Kaplan-Meier estimates of the recurrence-free survival curves of propensity score-matched intracranial hemangiopericytoma patients (surgery plus radiation and surgery alone groups). Postoperative radiotherapy did not increase the RFS (p = 0.367). F Kaplan-Meier estimates of the overall survival curves of propensity score-matched intracranial hemangiopericytoma patients (surgery plus radiation and surgery alone groups). There were no differences between the patients with and without PORT (p = 0.159)