Variable Comparison  Hazard Ratio 95% CI P-Value
GEO_volume Per 1000-unit 1.012 1.007, 1.017 <0.0001
GEO_ROI_VA_ratio Per unit 0.860 0.649, 1.140 0.29
GEO_fx_pruned Per unit 26.91 1.079, 671,1 0.045
IHIST_p10tile Per unit 1.005 0.999, 1.010 0.09
IHIST_entropy Per unit 0.851 0.695, 1.042 0.12
Table 3: Cox proportional hazards model for predicting overall survival using the five imaging variables. Abbreviations: CI=Confidence Interval, IHST_Entrop=Entropy, IHIST_P10tile=Histogram 10th Percentile, GEO_Volume=Tumor Volume, GEO_ROI_VA_Ratio=Volume-To-Area Ratio, And GEO_Fx_Pruned=Fraction GTV Pruned After Thresholding.