Table 1. Clinical characteristics of 973 pediatric brain tumor patients involved in the study.
| Characteristics | CBTTC cohort (N=973) | Training cohort (N=486) | Validation cohort (N=487) |
|---|---|---|---|
| Age at diagnosis, years | |||
| <10 | 449 (46.14%) | 209 (43.00%) | 240 (49.28%) |
| ≥10 | 381 (39.16%) | 188 (38.69%) | 193 (39.63%) |
| Unknown | 143 (14.70%) | 89 (18.31%) | 54 (11.09%) |
| Sex | |||
| Female | 379 (38.95%) | 189 (38.89%) | 190 (39.01%) |
| Male | 451 (46.35%) | 208 (42.80%) | 243 (49.90%) |
| Unknown | 143 (14.70%) | 89 (18.31%) | 54 (11.09%) |
| Race | |||
| American Indian or Alaskan Native | 13 (1.34%) | 5 (1.03%) | 8 (1.64%) |
| Asian | 28 (2.88%) | 16 (3.29%) | 12 (2.46%) |
| Black or African American | 79 (8.12%) | 32 (6.58%) | 47 (9.65%) |
| More than one race | 7 (0.71%) | 3 (0.62%) | 4 (0.82%) |
| Native Hawaiian or other Pacific Islander | 2 (0.20%) | 2 (0.41%) | 0 (0%) |
| White | 701 (72.05%) | 339 (69.76%) | 362 (74.34%) |
| Unknown | 143 (14.70%) | 89 (18.31%) | 54 (11.09%) |
| Ethnicity | |||
| Hispanic or Latino | 28 (2.88%) | 19 (3.91%) | 9 (1.85%) |
| Not Hispanic or Latino | 802 (82.42%) | 378 (77.78%) | 424 (87.06%) |
| Unknown | 143 (14.70%) | 89 (18.31%) | 54 (11.09%) |
| Histological subtype | |||
| Ependymoma | 93 (9.56%) | 44 (9.05%) | 49 (10.06%) |
| Medulloblastoma | 120 (12.33%) | 57 (11.73%) | 63 (12.94%) |
| Low-grade glioma/astrocytoma | 252 (25.90%) | 135 (27.78%) | 117 (24.02%) |
| High-grade glioma/astrocytoma | 109 (11.20%) | 42 (8.64%) | 67 (13.76%) |
| Others | 399 (41.01%) | 208 (42.80%) | 191 (39.22%) |
Data are reported as number and percent.