Table 1. Baseline demographics and clinical characteristics of patients.
| Variable | LGG (grade I/II) | HGG (grade III/IV) | P value |
|---|---|---|---|
| Patients | N=28 | N=92 | - |
| Gendera | |||
| Male | 46.4% (13/28) | 57.6% (53/92) | 0.298 |
| Female | 53.6% (15/28) | 42.3% (39/92) | |
| Ageb | |||
| Mean±SD | 35.9±16.2 | 49.3±15.0 | <0.001* |
| Locationc | |||
| Supratentorial | 10.7%(3/28) | 1.1%(1/92) | 0.060 |
| Subtentorial | 89.3%(25/28) | 98.9%(91/92) | |
| Histologic feature | |||
| Diffuse astrocytoma | 39.3%(11/28) | - | - |
| Oligodendroglioma | 7.1%(2/28) | - | - |
| Oligoastrocytoma | 39.3%(11/28) | - | - |
| Anaplastic astrocytoma | - | 6.5%(6/92) | - |
| Anaplastic oligodendroglioma | - | 5.4%(5/92) | - |
| Anaplastic oligoastrocytoma | - | 19.6%(18/92) | - |
| Glioblastoma | - | 67.4%(62/92) | NA |
| Miscellaneous | 14.3%(4/28) | 1.1%(1/92) | NA |
Note: Difference between LGG and HGG patients was evaluated with the Pearson Chi-Squarea, unpaired Student t testb and continuity correctionc. * The difference between the LGG and HGG groups was significant.