A Statistical Comparison of Prognostic Index Systems for Brain Metastases after Stereotactic Radiosurgery or Fractionated Stereotactic Radiation Therapy

Summarising the various comparative approaches used in this report, we found that the RTOG RPA, GGS, RADES I and RDAM systems were superior in more than one metric studied. Of these, only the RTOG RPA has been extensively validated using large datasets and clinically utilised both at the patient level and in clinical trials.