Table 1.
Summary of patient characteristics
| Category | Levels | N (%) |
|---|---|---|
| Patients | 50 (100) | |
| Age | <45 | 26 (52) |
| ≥45 | 24 (48) | |
| Sex | Female | 28 (56) |
| Male | 22 (44) | |
| Race | White | 43 (91.5) |
| American Indian/Alaskan Native | 1 (2.1) | |
| Black | 2 (4.3) | |
| Other | 1 (2.1) | |
| Unknown | 3 | |
| Prior treatment of any modality | Yes | 50 (100) |
| Prior radiotherapy | No | 3 (6) |
| Yes | 47 (94) | |
| Prior systemic therapy | No | 36 (72) |
| Yes | 14 (28) | |
| Prior surgery | Yes | 50 (100) |
| Number of prior treatments | 1 | 3 (6) |
| 2 | 33 (66) | |
| ≥3 | 14 (28) | |
| Histology grade | Grade I | 8 (18.2) |
| Grade II | 16 (36.4) | |
| Grade III | 20 (45.5) | |
| Unknown | 6 | |
| Tumor location | Spinal cord | 25 (51) |
| Supratentorial | 15 (30.6) | |
| Infratentorial | 8 (16.3) | |
| Multiple regionsa | 2 (4) | |
| Performance status | 60–70 | 11 (22) |
| 80 | 10 (20) | |
| 90 | 19 (38) | |
| 100 | 10 (20) |
aMultiple locations indicates that there were tumors located in multiple compartments at the time of diagnosis preventing the determination of the site of origin