Patient Characteristics
| Characteristic | Steps 1–3 | Step 4 |
|---|---|---|
| Sex (n) | ||
| Male | 25 | 13 |
| Female | 38 | 9 |
| Age (y) | ||
| Mean | 43.5 | 46.5 |
| Median | 44 | 45 |
| Diagnosis (n) | ||
| Low-grade glioma | 12 | 13 |
| Pituitary tumor | 6 | |
| Meningioma | 6 | 2 |
| Intracranial cyst | 4 | |
| Metastatic brain tumor | 3 | 5 |
| Chordoma | 2 | |
| Neurinoma | 1 | |
| Other intracranial tumor | 9 | 2 |
| Others | 15 | |
| Healthy volunteer (n) | 5 | |