Survival following surgery and prognostic factors for recently diagnosed malignant glioma: data from the Glioma Outcomes Project

Abstract

These data provide Class II evidence to support tumor grade, patient's age, and patient's functional status as prognostic factors for survival in individuals with recently diagnosed malignant gliomas. Resection (compared with biopsy) is also a strong prognostic factor; however, no quantitative attempt was made to assess the true extent of the resection.