Table 1.
Inclusion and exclusion criteria for cases and controls.
Fig 1.
Example of volumetric analysis.
The volumetric analysis of a right temporal HGG is shown in a 3-dimensional reconstruction, as well as in axial, sagittal and coronal planes. The tumor volume as determined based on contrast-enhanced T1-weighted images is highlighted in red.
Table 2.
Patient characteristics.
Fig 2.
Tumor volumes of HGG patients during and before the COVID-19 pandemic.
Boxplot diagrams of preoperative tumor volumes are shown for patients treated during the first year of the COVID-19 pandemic (red) or before COVID-19 (blue). While median volumes were slightly higher in patients treated during the first year of the COVID-19 pandemic, no statistically significant difference was detected between the two study groups.
Fig 3.
Interval to surgery in HGG patients during and before the COVID-19 pandemic.
Boxplot diagrams of the interval to surgery are shown for patients treated during the first year of the COVID-19 pandemic (red) or before COVID-19 (blue). Median interval to surgery was significantly shorter in patients treated during the first year of the COVID-19 pandemic.
Fig 4.
Overall patient survival in HGG patients during and before the COVID-19 pandemic.
Kaplan-Meier curves of overall patient survival are shown for patients treated during the first year of the COVID-19 pandemic (red) or before COVID-19 (blue). There was no significant survival difference between patients treated during the first year of the COVID-19 pandemic and patients treated before COVID-19.