Table 2.
Patient characteristics
| n | % | |
|---|---|---|
| Sex | ||
| Male | 36 | 55.4 |
| Female | 29 | 44.6 |
| Race | ||
| White | 48 | 73.8 |
| Black | 6 | 9.2 |
| Chinese | 1 | 1.5 |
| Other | 8 | 12.3 |
| Unknown | 2 | 3.1 |
| Primary site from on-study form | ||
| Cerebral hemisphere | 3 | 4.6 |
| Basal ganglia/thalamus | 7 | 10.8 |
| Hypothalamus-optic | 15 | 23.1 |
| Optic nerve | 7 | 10.8 |
| Suprasellar | 7 | 10.8 |
| Midbrain/medulla/dorsal exophytic | 9 | 13.8 |
| Cerebellar hemisphere | 3 | 4.6 |
| Fourth ventricle | 6 | 9.2 |
| Third ventricle | 5 | 7.7 |
| Other | 3 | 4.6 |
| Extent of tumor resection from surgery prior to study entry | ||
| Biopsy only (<10%) | 20 | 30.8 |
| Partial resection (10%–49%) | 10 | 15.4 |
| Subtotal resection (50%–95%) | 14 | 21.5 |
| Near total (>95%) | 7 | 10.8 |
| Gross total (no visible tumor at time of surgery) | 1 | 1.5 |
| No surgery (optic pathway tumors) | 11 | 1.5 |
| Not available | 2 | 18.5 |
| Tumor size at study entry | ||
| Optic pathway tumors | 11 | 13.8 |
| <1.5 cm2 | 18 | 10.8 |
| ≥1.5 to <3 cm2 | 11 | 16.9 |
| ≥3 cm2 | 23 | 35.4 |
| 16.9 | ||
| Not available | 2 | 6 |
| Diagnosis from institutional pathology | ||
| Pilocytic astrocytoma | 41 | 63.1 |
| Fibrillary astrocytoma | 2 | 3.1 |
| Protoplasmic astrocytoma | 1 | 1.5 |
| Oligodendroglioma | 1 | 1.5 |
| Mixed glioma | 2 | 3.1 |
| Gangliogliomas | 3 | 4.6 |
| Other (pilomyxoid, low-grade astrocytoma) | 4 | 6.2 |