TABLE I.
Demographics of Pediatric Patients in Cohort
| Category | Number (%) |
|---|---|
| Gender | |
| Male | 2,059 (51) |
| Female | 1,981 (49) |
| Age (median) | 9 years |
| Histology | |
| Pilocytic astrocytoma | 2,648 (65) |
| Astrocytoma NOS | 841 (21) |
| NOS grade I | 227 |
| NOS grade II | 614 |
| Diffuse astrocytoma | 260 (6) |
| Glioma NOS (total) | 189 (5) |
| Grade I | 68 |
| Grade II | 121 |
| Mixed glioma (total) | 75 (2) |
| Grade I | 16 |
| Grade II | 59 |
| Unique astrocytoma variant | 27 (1) |
| Grade I | 12 |
| Grade II | 15 |
| Grade (all histologies) | |
| Grade I | 2,971 (74) |
| Grade II | 1,069 (26) |
| Location | |
| Supratentorial | 1,264 (31) |
| Ventricular | 189 (5) |
| Cerebellum | 1,170 (29) |
| Brainstem | 504 (12) |
| Overlapping or NOS | 718 (18) |
| Spinal cord | 195 (5) |
| Extent of resection | |
| No resection | 373 (9) |
| Biopsy | 9 (0.2) |
| Subtotal resection | 1,769 (44) |
| Gross total | 1,094 (27) |
| Not otherwise specified | 593 (15) |
| Unknown | 202 (5) |
| Radiation | |
| No radiation therapy | 3,235 (80) |
| Radiation therapy | 736 (18) |
| Unknown | 69 (2) |
| Number of deaths | 442 (11) |
| PLGG | 347 |
| Non-PLGG | 78 |
| Unknown | 17 |