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Figure 1 Overall Survival (Kaplan Meier).

Figure 1 Kaplan–Meier overall survival.

Figure 4 Shows Kaplan Meier Curve indicating the ...

Figure 1 Kaplan-Meier survival curves showing the...

Figure 2 Kaplan-Meier for overall survival.

Figure 1 Overall Survival (Kaplan Meier estimate)...

Figure 3 Overall survival (Kaplan–Meier curves).

Figure 2 Kaplan–Meier overall survival plot.

Figure 1 Overall (Kaplan-Meier) survival curve.

Figure 2 Kaplan Meier overall survival estimates.

Fig. 1.: (A) Kaplan–Meier survival curves of overall survival by time interval from surgical resection to the initiation of radiotherapy. (B) Kaplan–Meier curves of overall survival by time interval from biopsy to the initiation of radiotherapy.

Image Text (High Precision): 1.00 days months patients radiotherapy

Other Images from "The timing of cranial radiation in elderly patients with newly diagnosed glioblastoma multiforme":


Fig. 1. (A) Kaplan–Meier survival curves of over...

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Abstract

There are few and conflicting studies on the optimal timing of initial cranial radiation in the treatment of glioblastoma multiforme (GBM) but none of them have addressed this issue in the elderly population. We used the linked Surveillance, Epidemiology, and End Results (SEER) Medicare database to investigate whether the time interval from surgery to initiation of radiation is a significant prognostic factor for survival in subjects aged ≥65 years with newly diagnosed GBM. Cox modeling was used to assess the effect of waiting time on overall survival. We identified a total of 1,375 patients, 296 with biopsies and 1,079 with resections. The median time to the initiation of radiotherapy was 15 days post operation (interquartile range 12–21). In the univariate Cox analysis of those who had debulking surgeries, a waiting time of >22 days showed a significant inverse relationship with survival (hazard ratio [HR] = 0.82, 95% CI 0.70–0.97, p = 0.02), but after adjustment for confounders, it was not a statistically significant factor in the final Cox model (HR = 0.99, 95% CI 0.97–1.01, p = 0.14). Therefore, waiting time was not a significant prognostic factor for subjects with biopsies in both the univariate and multivariate analyses. Although effort should be made to initiate radiotherapy as soon as possible after surgical resection/biopsy, a brief delay similar to that experienced by our cohort does not have a significant impact on survival.


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