Table 1. . Patient and tumor characteristics (n = 196).
| Age at diagnosis (years) | ||
| Median | 9 | |
| Range | 1 to 18 | |
| IQR | 5 to 13 | |
| Sex | Number of patients | Percentage |
| Male | 126 | 64.3 |
| Female | 70 | 35.7 |
| Comorbidities and other illnesses | 14 | 7.1 |
| Respiratory | 7 | 3.6 |
| Autism spectrum disorder | 2 | 1 |
| Attention deficit hyperactivity disorder | 1 | 0.5 |
| Ventricular septal defect | 1 | 0.5 |
| G6PD deficiency | 1 | 0.5 |
| Polycythemia vera | 1 | 0.5 |
| Cellulitis | 1 | 0.5 |
| Tumor-related syndromes | 10 | 5.1 |
| Tuberous sclerosis complex | 5 | 2.6 |
| Neurofibromatosis type II | 4 | 2 |
| Neurofibromatosis type I | 1 | 0.5 |
| Income cluster | ||
| Poor | 32 | 16.3 |
| Low to lower middle income | 112 | 57.1 |
| Middle to upper middle income | 47 | 24 |
| Mother's highest educational attainment | ||
| Elementary | 12 | 6.1 |
| High school/vocational | 87 | 44.4 |
| College/post-graduate | 56 | 28.6 |
| Father's highest educational attainment | ||
| Elementary | 14 | 7.1 |
| High school/vocational | 78 | 39.8 |
| College/post-graduate | 53 | 27 |
| Tumor size (volume) | ||
| Median | 35.2 cm3 | |
| Range | 1.5 to 611 cm3 | |
| IQR | 18.6 to 60 cm3 | |
| Tumor location | Number of patients | Percentage |
| Supratentorial | 98 | 50 |
| Cerebrum | 36 | 18.4 |
| Sellar-suprasellar | 31 | 15.8 |
| Pineal | 31 | 15.8 |
| Infratentorial | 98 | 50 |
| Posterior fossa | 82 | 41.8 |
| Brainstem | 16 | 8.2 |
| Tumor grade | ||
| WHO grade I | 59 | 30.1 |
| WHO grade II | 12 | 6.1 |
| WHO grade III | 1 | 0.5 |
| WHO grade IV | 74 | 37.8 |
| Histopathology | ||
| Medulloblastoma | 43 | 21.9 |
| Low grade glioma | 40 | 20.4 |
| High grade glioma | 37 | 18.9 |
| Germ cell tumors | 24 | 12.2 |
| Craniopharyngioma | 14 | 7.1 |
| Ependymoma | 10 | 5.1 |
| Schwannoma | 6 | 3.1 |
| Pituitary adenoma | 3 | 1.5 |
| ATRT | 2 | 1 |
| Metastasis at diagnosis | 3 | 1.5 |
ATRT: Atypical teratoid rhabdoid tumor; IQR: Interquartile range.