Kaplan-Meier curves of lung cancer mortality survival predictions including 95% confidence intervals (resampled T0-T2 subcohort).

The base models only contain the variable emphysema score; the progression models include both emphysema score and average change of emphysema score per year. Risk groups are divided by risk percentiles and their corresponding hazard ratios as displayed in the key. The resampled T0-T2 subcohort contains participants with both T0 and T2 scans resampled to the original cohort size. Upper-left: unadjusted base model; Upper-right: unadjusted two-year progression model; Lower-left: adjusted base model; Lower-right: adjusted two-year progression model.