Table 1.
Association between preoperative and intraoperative characteristics and the chance of ventricular opening.
| Variables | No Ventricular Opening | Ventricular Opening | Statistics |
|---|---|---|---|
| Location | X2 = 9.44 p = 0.01 | ||
| Precentral | 144/311 | 17/69 | |
| Postcentral | 58/311 | 18/69 | |
| Temporoinsular | 109/311 | 33/69 | |
| Distance of CEN from Ventricle | X2 = 34.0 p < 0.01 | ||
| Contiguous | 65/311 | 34/69 | |
| <0.5 cm | 33/311 | 12/69 | |
| 0.5–1 cm | 46/311 | 5/69 | |
| 1–1.5 cm | 44/311 | 3/69 | |
| 1.5–2 cm | 39/311 | 4/69 | |
| 2–2.5 cm | 39/311 | 4/69 | |
| >2.5 cm | 45/311 | 6/69 | |
| Tumor Type | X2 = 8.47 p = 0.29 | ||
| Glioblastoma | 267/311 | 57/69 | |
| Astrocitoma | 25/311 | 3/69 | |
| Gliosarcoma | 2/309 | 1/69 | |
| Oligoastrocitoma | 1/309 | 0/69 | |
| Oligodendroglioma | 15/311 | 5/69 | |
| Xantoastrocitoma | 1/311 | 1/69 | |
| Anaplastic Ependymoma | 1/311 | 0/69 | |
| Anaplastic Ganglioglioma | 0/311 | 1/69 | |
| Leptomeningeal involvement | 11/311 | 2/69 | X2 = 0.07 p = 0.79 |
| Ependymal involvement | 12/311 | 9/69 | X2 = 9.37 p < 0.01 |
| Corpus Callosum involvement | 29/311 | 10/69 | Χ2 = 1.64 p = 0.20 |
| Lumbar Drain (LD) positioning | 2/311 | 0/69 | Χ2 = 0.45 p = 0.50 |
| External Ventricular Drain (EVD) positioning | 0/311 | 6/69 | Χ2 = 27.48 p < 0.01 |
| Extent of Resection (EOR) | Χ2 = 2.53 p = 0.28 | ||
| SupTR | 24/311 | 2/69 | |
| GTR | 249/311 | 55/69 | |
| STR | 38/311 | 11/69 |