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. 2020 Sep 5;51(1):45–53. doi: 10.1093/jjco/hyaa162

Figure 2.

Figure 2.

Definitions of survival analysis. pGBM-PFS; time from initial surgery of primary GBM to the date of either first progression, death, or the final confirmed survival date in case that the date of progression cannot be determined. Rec-pGBM-OS; time from first progression of primary GBM to either death or the final survival date confirmed. pGBM-OS; time from initial surgery of primary GBM to either death or the final survival date confirmed. LrGG-PFS; time from initial surgery of glioma to the diagnosis date of secondary GBM. sGBM-OS; time from the diagnosis date of secondary GBM to either death or the final survival date confirmed. LrGG-OS; time from initial surgery of lower grade glioma to either death or the final survival date confirmed.