Table 2 Overview of tumor-relevant features extracted from the preoperative radiology report. The chi-square test was used to assess categorical variables with more than two categories, in which case the resulting p-value is denoted in the first row relating to that category. For binary variables, Fisher’s exact test was used, and unpaired t-test with Welsh’s correction for continuous variables.
Feature | Main dataset n (%) | Evaluation dataset n (%) | p-value |
|---|---|---|---|
Tumor volume | 21.47 ± 31.23 | 19.82 ± 27.21 | 0.6068 |
Hydrocephalus on MRI | 61 (5.7%) | 3 (3.7%) | 0.6162 |
Tumor location | 0.002 | ||
Intratentorial | 251 (23.4%) | 33 (40.7%) | |
Supratentorial | 789 (73.6%) | 48 (59.3%) | |
Midline shift (> 3 mm) on MRI | 186 (17.4%) | 21 (25.9%) | 0.0736 |
Suspected diagnosis | 0.0001 | ||
Meningeoma | 364 (34.0%) | 31 (38.3%) | |
Metastasis | 188 (17.5%) | 18 (22.2%) | |
LGG | 74 (6.9%) | 2 (2.5%); | |
HGG | 39 (3.6%) | 3 (3.7%) | |
GBM | 164 (15.3%) | 11 (13.6%) | |
Neuroma (including vestibular) | 75 (7%) | 0 (0.0%) | |
Haemangioblastoma | 1 (0.09%) | 0 (0.0%) | |
Other | 167 (15.6%) | 14 (17.3%) |
