Cox Proportional Hazards Models for Overall Survival.

Abbreviations: Hazard Ratio, HR; Confidence Intervals, CI.
Statistically significant hazard ratios (p < 0.05) are shown in bold.
1 The imaging features are dichotomized at their respective median values and age is dichotomized at 65 years
2 Each imaging biomarker is analyzed independently in separate univariate models. The unadjusted HRs represent the main effects of each covariate.
3 Based on forward selection, only two imaging biomarkers are included in the model but excluded age, gender, and stage.
4 Only two imaging biomarkers are included in the model in addition to age, gender, and stage
Cox Proportional Hazards Models for Overall Survival.