Table 2.
Demographics of Primary Brain Tumor Patients
| Demographics | n (%) |
|---|---|
| Mean age | 50.6 years (range, 19-81 years) |
| Gender | |
| Male | 44 (53.7) |
| Female | 38 (46.3) |
| Ethnicity | |
| Caucasian | 70 (85.4) |
| African American | 11 (13.4) |
| Other | 1 (1.2) |
| Mean level of education | 14.8 years (range, 7-20 years) |
| <HS | 10 (12) |
| HS | 12 (15) |
| >HS | 60 (73) |
| Mean estimated intelligencea | 101.7 (range, 68-127) |
| Tumor type | |
| Meningioma | 6 (7.3) |
| Oligodendroglioma | 15 (18.3) |
| Astrocytoma | 16 (19.5) |
| Glioblastoma multiforme | 34 (41.5) |
| CNS lymphoma | 6 (7.3) |
| Mixed glioma | 1 (1.2) |
| Craniopharyngioma | 1 (1.2) |
| Hemangiopericytoma | 1 (1.2%) |
| Hemangioma | 1 (1.2%) |
| Schwannoma | 1 (1.2%) |
| Tumor grade | |
| Low | 28 (34.1%) |
| High | 54 (65.8%) |
| Tumor hemisphere | |
| Left | 34 (41.5%) |
| Right | 33 (40.2%) |
| Bilateral | 15 (18.3%) |
| Surgery | |
| Biopsy | 20 (24.4%) |
| Resection | 61 (74.4%) |
| None | 1 (1.2%) |
| Hx of radiation therapy | 37 (45.1%) |
| Hx of chemotherapy | 42 (51.2%) |
Abbreviations: HS, high school; Hx, history.
aThe Advanced Clinical Solutions–Test of Premorbid Functioning (TOPF)26 was used to assess estimated intelligence. The TOPF is a reading paradigm that has been shown to correlate with premorbid intelligence in a variety of clinical populations as well as intelligence testing in nonclinical populations.26–28 Word reading tests, like the TOPF, have long been the standard for determining premorbid functioning as this ability is often preserved following an insult to the brain.29–31