Table 1.

Distribution of glioma histology subtypes by cohort study

HistologyHPFSNHSINHSII
Glioblastoma70 (83%)104 (70%)8 (50%)
Astrocytoma12 (14%)35 (24%)3 (19%)
Oligodendroglioma05 (3%)0
Ependymoma1 (1%)1 (1%)2 (12%)
Mixed glioma1 (1%)3 (2%)3 (19%)
Missing medical record (or subtype not specified)49344
Total glioma cases13318220